You’ve likely experienced that frustrating wait for your freshly brewed coffee to cool down. What if you could chill a full cup in under a minute without diluting it? The right cooling device can transform your morning routine, but you’ll need to know which models actually deliver on their promises. Here’s what separates the best performers from the rest.
| HyperChiller HC2M Iced Coffee/Beverage Cooler (Mint Blue) |  | Best Overall | Chilling Speed: 60 seconds | Capacity: 12.5 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| HyperChiller HC3 Iced Coffee Beverage Cooler |  | Most Improved | Chilling Speed: Less than 60 seconds | Capacity: 12.5 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| HyperChiller HC2 Iced Coffee Beverage Cooler |  | Original Classic | Chilling Speed: 60-90 seconds | Capacity: 12.5 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| HyperChiller HC2CB Iced Coffee Beverage Cooler |  | Best Value | Chilling Speed: Less than 60 seconds | Capacity: 12.5 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| HyperChiller HC2W Iced Beverage Cooler (12.5 Oz) |  | Most Versatile | Chilling Speed: Less than 60 seconds | Capacity: 12.5 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| HyperChiller HC2M Iced Coffee Beverage Cooler | | Best Design | Chilling Speed: Less than 60 seconds | Capacity: 12.5 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| Elite Gourmet HyperChiller Iced/Hot Coffee Maker |  | Best Dual-Function | Chilling Speed: Minutes (brew time varies) | Capacity: 8, 10, or 12 oz options | Dilution: Variable (depends on brewing method) | CHECK ON AMAZON | Read Our Analysis |
| CHILLPILL GO Iced Coffee Chiller Stainless Steel Cup |  | Fastest Chilling | Chilling Speed: 3 minutes or less | Capacity: 16 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| Iced Coffee Tumbler with Lid and Straw (16oz) |  | Best Insulation | Chilling Speed: 90 seconds (hot drinks); 2-5 minutes (room temp) | Capacity: 16 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| Reusable Iced Coffee Insulator Sleeve 16-24oz (Red) |  | Budget-Friendly Pick | Chilling Speed: N/A (insulator sleeve only) | Capacity: Fits 16-32 oz cups | Dilution: N/A (insulator sleeve only) | CHECK ON AMAZON | Read Our Analysis |
| CHILLPILL GO Iced Coffee Chiller Stainless Steel Cup |  | Most Portable | Chilling Speed: 3 minutes or less | Capacity: 16 oz | Dilution: No dilution | CHECK ON AMAZON | Read Our Analysis |
| Zoku Instant Iced Coffee Maker Portable Tumbler |  | Best Compact Design | Chilling Speed: As little as 5 minutes | Capacity: 11 oz | Dilution: Zero dilution | CHECK ON AMAZON | Read Our Analysis |
| Hydro Flask 12 Oz Insulated Can Cooler (Cascade Blue) |  | Premium Pick | Chilling Speed: Hours of cold retention | Capacity: 12 oz | Dilution: Condensation-free | CHECK ON AMAZON | Read Our Analysis |
| BrüMate Hopsulator Juggernaut Can Cooler Insulated |  | Best Heavy-Duty | Chilling Speed: Ongoing chill (no specific time) | Capacity: 24-25 oz | Dilution: Condensation-free | CHECK ON AMAZON | Read Our Analysis |
| JIAWANSHUN Electric Coffee Bean Cooler 1.1LB Capacity |  | Professional Grade | Chilling Speed: 2 minutes | Capacity: 1.1 lb capacity | Dilution: N/A (bean cooler) | CHECK ON AMAZON | Read Our Analysis |
More Details on Our Top Picks
HyperChiller HC2M Iced Coffee/Beverage Cooler (Mint Blue)
Want iced coffee in 60 seconds without watering down your brew? The HyperChiller HC2M delivers exactly that. This patented cooler uses regular water—no chemicals or gels—to chill beverages up to 130+ degrees in just one minute. Its 12.5-ounce capacity accommodates most coffee makers, from drip to K-Cup systems. You’ll save money quickly; at roughly $3-4 per store-bought iced coffee, this cooler pays for itself in about two weeks. Beyond coffee, you’ll use it for wine, whiskey, and iced tea. With four simple dishwasher-safe parts, cleanup’s effortless. The mint blue design looks sleek on any counter.
- Chilling Speed:60 seconds
- Capacity:12.5 oz
- Dilution:No dilution
- Material:BPA-free plastic
- Dishwasher Safe:Yes (all parts)
- Cooling Method:Frozen water chambers (no chemicals/gels)
- Additional Feature:Compatible with all coffee makers
- Additional Feature:Pays for itself in weeks
- Additional Feature:Mint blue color option
HyperChiller HC3 Iced Coffee Beverage Cooler
Need your coffee chilled in less than 60 seconds without watering it down? The HyperChiller HC3 is your answer. This improved, durable 12.5-oz cooler uses a patented design with regular water—no chemicals or gels needed. You’ll fill it with water, freeze it upright, then pour your hot coffee directly in or brew into it. The result? Perfectly chilled beverages in seconds, ideal for your on-the-go mornings. Beyond coffee, you’ll chill tea, juice, wine, and spirits without dilution. Its dishwasher-safe components make cleanup effortless, while the versatile design works as your best happy hour accessory.
- Chilling Speed:Less than 60 seconds
- Capacity:12.5 oz
- Dilution:No dilution
- Material:Plastic
- Dishwasher Safe:Yes (all parts)
- Cooling Method:Frozen water chambers (no chemicals/gels)
- Additional Feature:Best happy hour accessory
- Additional Feature:Improved V2 product design
- Additional Feature:Multiple new colors added
HyperChiller HC2 Iced Coffee Beverage Cooler
Looking for a coffee cooler that chills without watering down your drink? The HyperChiller HC2 delivers. You’ll freeze its two stainless steel chambers, then pour your hot or room-temperature beverage into the 12.5 oz third chamber. Swirl for 60–90 seconds, and you’re done. This patented design chills coffee, tea, wine, and juice without dilution, preserving full flavor. The BPA-free polypropylene and food-grade stainless steel construction is dishwasher safe and durable. While the manufacturer’s discontinued this model, it remains a practical alternative to traditional ice. With over 23,000 positive reviews, it’s proven reliable for quick beverage cooling.
- Chilling Speed:60-90 seconds
- Capacity:12.5 oz
- Dilution:No dilution
- Material:BPA-free polypropylene & food-grade stainless steel
- Dishwasher Safe:Yes (all parts)
- Cooling Method:Two frozen ice chambers (no chemicals/gels)
- Additional Feature:BPA free polypropylene plastic
- Additional Feature:Food grade stainless steel
- Additional Feature:Fits under coffeemaker spout
HyperChiller HC2CB Iced Coffee Beverage Cooler
Ever rushed through your morning routine only to wait for hot coffee to cool? The HyperChiller HC2CB solves that problem instantly. This improved V2 model chills your beverage in under 60 seconds without diluting it—perfect for iced coffee, tea, juice, wine, or spirits. You’ll fill it with water, freeze it, then pour your hot drink directly in or brew straight into it. The patented design uses no chemicals or gels, and all components are dishwasher safe. Works with any coffee maker type. It’s the easiest, most cost-effective way to enjoy cold beverages on hectic mornings, now available in charcoal black and new colors.
- Chilling Speed:Less than 60 seconds
- Capacity:12.5 oz
- Dilution:No dilution
- Material:Plastic
- Dishwasher Safe:Yes (all parts)
- Cooling Method:Frozen water chambers (no chemicals/gels)
- Additional Feature:Charcoal black color option
- Additional Feature:Works with all makers
- Additional Feature:On-the-go iced coffee solution
HyperChiller HC2W Iced Beverage Cooler (12.5 Oz)
If you’re constantly rushed in the mornings and can’t wait for ice to form, the HyperChiller HC2W’s patented design cools your coffee in under 60 seconds—no ice needed. This improved V2 model is stronger and more durable than its predecessor, using regular water to chill beverages without chemicals or gels. It’s compatible with all coffee makers, whether you brew directly into it or pour from a carafe. Beyond coffee, you’ll chill tea, juice, wine, and spirits without dilution. Simply fill with water, freeze upright, then use. All parts are dishwasher safe, making cleanup effortless.
- Chilling Speed:Less than 60 seconds
- Capacity:12.5 oz
- Dilution:No dilution
- Material:Plastic
- Dishwasher Safe:Yes (all parts)
- Cooling Method:Frozen water chambers (no chemicals/gels)
- Additional Feature:White color option available
- Additional Feature:Happy hour beverage accessory
- Additional Feature:Eliminates need for ice
HyperChiller HC2M Iced Coffee Beverage Cooler
Want an iced coffee ready in under a minute without watering down your drink? The HyperChiller HC2M delivers exactly that. This improved, more durable version uses only regular water—no chemicals or gels—to chill beverages in 60 seconds flat. You’ll appreciate its versatility beyond coffee; it works beautifully for tea, wine, juice, and spirits. The process is straightforward: fill with water, freeze it, then brew directly into the chilled vessel or pour your beverage in. All parts are dishwasher safe for easy cleanup. Compatible with any coffee maker, it’s your most cost-effective chilling solution yet.
- Chilling Speed:Less than 60 seconds
- Capacity:12.5 oz
- Dilution:No dilution
- Material:Plastic
- Dishwasher Safe:Yes (all parts)
- Cooling Method:Frozen water chambers (no chemicals/gels)
- Additional Feature:Spearmint color variant option
- Additional Feature:Compatible with all brewers
- Additional Feature:Perfect for on-the-go mornings
Elite Gourmet HyperChiller Iced/Hot Coffee Maker
The Elite Gourmet HyperChiller EHC210N is your answer if you’re tired of waiting in café lines for a simple iced coffee. This dual-brewing machine lets you brew with K-Cups or fresh grounds, delivering hot or cold beverages in minutes. You’ll choose your pour size—8, 10, or 12 ounces—with one touch. The reusable mesh filter accommodates grounds or loose-leaf tea, while the removable K-Cup holder and drip tray make cleanup effortless. Save money and time by crafting café-quality drinks at home. Its sleek black and stainless-steel design fits any kitchen aesthetic, making it both functional and stylish.
- Chilling Speed:Minutes (brew time varies)
- Capacity:8, 10, or 12 oz options
- Dilution:Variable (depends on brewing method)
- Material:Stainless steel
- Dishwasher Safe:Not specified
- Cooling Method:Built-in iced beverage brewing system
- Additional Feature:Dual brewing K-Cup/grounds
- Additional Feature:8, 10, or 12oz
- Additional Feature:Reusable mesh filter included
CHILLPILL GO Iced Coffee Chiller Stainless Steel Cup
Speed matters when you’re rushing out the door with a hot cup of coffee. The CHILLPILL GO transforms your brew in three minutes flat without diluting it with ice. You’ll pour hot coffee into this stainless steel cup, swirl briefly, and enjoy iced coffee instantly. Its patent-pending cooling technology does the heavy lifting while you prepare for your day. The 16-ounce capacity fits your needs, and the included lid and straw make it genuinely portable. Simply freeze it after each use—no ice required. Whether you’re chilling espresso, tea, or regular coffee, this white cup delivers cold drinks fast and conveniently.
- Chilling Speed:3 minutes or less
- Capacity:16 oz
- Dilution:No dilution
- Material:Stainless steel
- Dishwasher Safe:Not specified
- Cooling Method:Rapid cooling via swirling (patent-pending tech)
- Additional Feature:Patent-pending rapid cooling technology
- Additional Feature:Includes lid and straw
- Additional Feature:Portable 16 oz capacity
Iced Coffee Tumbler with Lid and Straw (16oz)
If you’re tired of watered-down iced coffee, UZG’s freezable tumbler delivers zero-dilution drinks without relying on ice cubes. Pre-freeze it for four hours, then pour your room-temperature beverage to achieve a perfectly chilled 41–50℉ drink that stays cold for approximately 2.5 hours. The double-walled stainless steel design provides cooling equivalent to 7oz of ice, while patented anti-burst technology prevents damage from freezing expansion. You’ll also appreciate the 90-second cooling capability for hot drinks. At 16oz with included lid and straw, this BPA-free, dishwasher-safe tumbler combines portability with performance, earning solid 4.2/5 customer ratings.
- Chilling Speed:90 seconds (hot drinks); 2-5 minutes (room temp)
- Capacity:16 oz
- Dilution:No dilution
- Material:BPA-free stainless steel & silicone
- Dishwasher Safe:Yes
- Cooling Method:Pre-frozen double-walled chamber (no chemicals)
- Additional Feature:Patented anti-burst design
- Additional Feature:90 second cooling capability
- Additional Feature:BPA-free food grade materials
Reusable Iced Coffee Insulator Sleeve 16-24oz (Red)
Want to ditch disposable paper sleeves while keeping your hands dry and your coffee cold? This reusable neoprene insulator sleeve does exactly that. You’ll get three sleeves per package—small, medium, and large—that stretch to fit 16–24oz cups from Starbucks, Dunkin’ Donuts, McDonald’s, and beyond. The non-slip fabric prevents slipping, while thick neoprene maintains your beverage’s temperature longer. Machine washable and foldable for travel, you’ll save money eliminating disposable sleeves. Its stylish embossed red design looks sharp, and the durable stitching withstands daily use. You’re investing in an eco-friendly solution that’s both budget-friendly and practical.
- Chilling Speed:N/A (insulator sleeve only)
- Capacity:Fits 16-32 oz cups
- Dilution:N/A (insulator sleeve only)
- Material:Neoprene
- Dishwasher Safe:Yes (machine washable)
- Cooling Method:Passive insulation (no active cooling)
- Additional Feature:3 sleeves per package
- Additional Feature:Machine washable neoprene material
- Additional Feature:Fits multiple cup brands
CHILLPILL GO Iced Coffee Chiller Stainless Steel Cup
For coffee lovers who can’t wait for their brew to cool naturally, the CHILLPILL GO delivers iced coffee in just three minutes—no ice, no dilution, no fuss. You’ll pour your hot coffee into this stainless steel cup, swirl it briefly, and you’re ready to head out the door. Its patent-pending design maximizes the chilling surface-to-liquid ratio, ensuring rapid cooling efficiency. The 16-ounce capacity suits on-the-go lifestyles perfectly. Simply freeze it between uses—no water needed. Beyond coffee, you’ll chill tea, espresso, and other beverages with equal ease. This portable solution eliminates the need for expensive machines, making it an essential accessory for busy mornings and beverage enthusiasts.
- Chilling Speed:3 minutes or less
- Capacity:16 oz
- Dilution:No dilution
- Material:Stainless steel
- Dishwasher Safe:Not specified
- Cooling Method:Rapid cooling via swirling (patent-pending tech)
- Additional Feature:Highest chilling surface-to-liquid ratio
- Additional Feature:Portable 16 oz tumbler
- Additional Feature:Patent-pending cooling technology
Zoku Instant Iced Coffee Maker Portable Tumbler
The Zoku Instant Iced Coffee Maker stands out for those who crave iced coffee without the dilution or expense of coffee shop visits. You’ll enjoy a perfectly chilled beverage in as little as five minutes using its pre-chilled stainless steel core and insulating sleeve. The zero-dilution design preserves your coffee’s full strength, whether you’re brewing with a single-cup machine, drip, or pour-over method. This 11-ounce portable tumbler fits most car cup holders and includes a spill-resistant lid with matching straw. Its all-in-one design reduces clutter while remaining environmentally friendly. BPA and phthalate-free materials ensure safety, and you’ll clean it effortlessly with warm water and soap.
- Chilling Speed:As little as 5 minutes
- Capacity:11 oz
- Dilution:Zero dilution
- Material:Stainless steel & sleeve material
- Dishwasher Safe:Hand wash with warm water & soap
- Cooling Method:Pre-chilled stainless steel core with sleeve
- Additional Feature:Iced coffee in 5 minutes
- Additional Feature:Designed in the USA
- Additional Feature:Fits most car cupholders
Hydro Flask 12 Oz Insulated Can Cooler (Cascade Blue)
If you’re juggling multiple beverages throughout your day—switching between cans, bottles, and poured drinks—Hydro Flask’s 12 oz cooler adapts to your lifestyle. The double-wall vacuum insulation with TempShield technology keeps drinks iced cold for hours, whether you’re chilling beer or coffee. You’ll appreciate the durable, pro-grade stainless steel construction that prevents flavor transfer, ensuring your beverage tastes pure. Its cupholder-friendly design fits most vehicles and setups seamlessly. Beyond can cooling, you can pour drinks directly into it and sip in style. This versatile cooler transforms your beverage routine without compromises.
- Chilling Speed:Hours of cold retention
- Capacity:12 oz
- Dilution:Condensation-free
- Material:Stainless steel
- Dishwasher Safe:Not specified
- Cooling Method:Double-wall vacuum insulation (TempShield)
- Additional Feature:Double-wall vacuum insulation
- Additional Feature:TempShield temperature preservation
- Additional Feature:Cupholder-friendly design
BrüMate Hopsulator Juggernaut Can Cooler Insulated
Looking for a cooler that actually keeps your tall boys frosty? The BrüMate Hopsulator Juggernaut is the world’s first insulated can cooler designed specifically for 24oz and 25oz cans. Its double-walled stainless steel construction with an extra copper layer keeps drinks 20x colder than standard neoprene coolers, maintaining the chill until you’ve finished every drop. You’ll appreciate the push-lock technology that securely holds your can in place while you’re at the beach, camping, or hosting game nights. Plus, you’ll eliminate condensation completely—no more sweaty hands or water rings on your furniture. Simply unscrew the gasket to remove your empty can.
- Chilling Speed:Ongoing chill (no specific time)
- Capacity:24-25 oz
- Dilution:Condensation-free
- Material:Stainless steel with copper layer
- Dishwasher Safe:Not specified
- Cooling Method:Double-walled stainless steel with copper layer
- Additional Feature:Fits 24oz/25oz tall cans
- Additional Feature:20x colder than neoprene
- Additional Feature:Push-lock technology holds securely
JIAWANSHUN Electric Coffee Bean Cooler 1.1LB Capacity
Serious home roasters who need rapid heat removal without sacrificing bean quality will appreciate this electric cooler’s engineering. You’ll cool 1.1 lb of beans in just two minutes while a dual-layer stainless steel screen system removes roughly 98% of chaff simultaneously. The bottom mesh separates debris through negative-pressure airflow and stirring, while the upper perforated screen channels chaff downward into a dedicated collection tray. You’ll maintain optimal flavor by preventing over-roasting, and cleanup’s straightforward—simply brush chaff away and wipe the stainless tray. The cooler’s heavy steel base and dual fan guards ensure stability and safety during operation.
- Chilling Speed:2 minutes
- Capacity:1.1 lb capacity
- Dilution:N/A (bean cooler)
- Material:Stainless steel screens & steel base
- Dishwasher Safe:Not specified
- Cooling Method:Fan-based air cooling with chaff separation
- Additional Feature:1.1 lb bean capacity
- Additional Feature:~98% chaff removal efficiency
- Additional Feature:2-layer stainless steel screens
Factors to Consider When Choosing Hyperchiller Coffee Coolers
When you’re shopping for a hyperchiller coffee cooler, you’ll want to evaluate capacity and size options that fit your daily consumption habits. You should also consider the cooling speed and performance, durability of materials, color and design preferences, and compatibility with your preferred brewing methods to ensure you’re getting the right fit for your lifestyle.
Capacity and Size Options
HyperChiller models standardize around a 12.5-ounce capacity, which you’ll find across nearly every variant on the market. This size proves ideal for single-serve chilling, allowing you to chill your beverage quickly without transferring it multiple times. The compact dimensions—approximately 4.25 x 4.25 x 6.75 inches—make it easy to store in your refrigerator or take on the go. Whether you choose the HC2M in Mint, HC2W in White, or the improved HC3 V2 design, you’re getting consistent capacity across all color options. This standardization means you won’t sacrifice functionality for aesthetics. The 12.5-ounce serving size also prevents dilution, ensuring your coffee stays flavorful while reaching your desired temperature in minutes.
Color and Design Preferences
How much does aesthetics matter when you’re selecting a coffee cooler? If you want your beverage accessory to match your personal style, HyperChiller offers plenty of options. You’ll find six color variants: Mint Blue, Black, Charcoal Black, Spearmint, White, and regular Black. Each maintains the standard 12.5 oz capacity across the lineup.
Beyond color, consider material composition. Some models feature BPA-free plastic construction, while others incorporate food-grade stainless steel components. These material choices affect both durability perception and visual appeal.
V2 versions accompany newer color releases, signaling design improvements alongside aesthetic updates. If traditional HyperChiller hues don’t appeal to you, explore alternatives like ChillPill Go and Zoku options. These alternatives provide different finish choices and visual characteristics worth exploring based on your preferences.
Compatibility With Brewing Methods
Beyond selecting a color that suits your style, you’ll want to ensure your HyperChiller works seamlessly with your existing coffee setup. Most models claim compatibility with drip, single-serve, and K-Cup brewers, giving you flexibility regardless of your brewing method.
Some units support direct brewing into the HyperChiller, while others require pouring hot coffee from a carafe. Many designs fit conveniently under traditional coffeemakers for direct dispense, streamlining your workflow.
The key advantage across all versions is rapid chilling—typically 60 seconds or less—without dilution. This speed works consistently whether you’re brewing strong espresso or standard drip coffee. Before purchasing, check whether your specific brewer pairs with direct-dispense models or if you’ll need the carafe-pour option for optimal convenience.
Durability and Material Quality
What materials keep your HyperChiller functioning reliably through countless daily uses? Most models feature BPA-free plastics paired with food-grade stainless steel, ensuring both safety and longevity. You’ll appreciate dishwasher-safe components that simplify cleaning without compromising durability.
HyperChiller’s design incorporates multiple frozen chambers built to withstand repeated cooling cycles without performance degradation. Newer versions proudly advertise “stronger and more durable” construction, reflecting continuous improvements in material quality. The robust dimensions and substantial weight—typically around 12.6 ounces for a 12.5-ounce capacity model—indicate solid engineering rather than flimsy construction.
When selecting your HyperChiller, prioritize these material specifications. You’re investing in equipment designed to endure daily use, temperature fluctuations, and frequent washing. Quality materials directly translate to extended product life and consistent cooling performance.
Speed and Cooling Performance
While durability ensures your HyperChiller lasts, speed determines whether you’ll actually use it daily. You’ll appreciate models that chill beverages in 60 to 90 seconds without dilution or flavor loss—a game-changer for your morning routine.
Dual or multiple frozen chambers accelerate cooling significantly compared to single-chamber designs, reducing your overall wait time. If you’re constantly on-the-go, countertop variants deliver rapid chilling for coffee, tea, wine, and juice in under two minutes total.
The “no ice needed” operation streamlines your workflow entirely. You’ll skip the prep hassle of loading ice, allowing you to grab an iced beverage faster than traditional methods. Consider how these speed metrics align with your lifestyle before selecting your ideal model.
Frequently Asked Questions
How Long Does It Typically Take to Chill Coffee From Hot to Ice-Cold?
You’ll typically chill hot coffee to ice-cold temperatures in about 60 seconds using a Hyperchiller. Without one, you’re looking at 5-10 minutes in the freezer or 15-20 minutes with ice. The device’s unique design dramatically speeds up your cooling process.
Are Hyperchiller Coolers Dishwasher Safe or Hand Wash Only?
You’ll want to hand wash your Hyperchiller cooler to maintain its durability. While some models can tolerate the dishwasher’s heat and spray, hand washing with warm soapy water ensures you’re protecting the device’s cooling channels and seals for long-lasting performance.
Can Hyperchiller Coolers Be Used for Beverages Other Than Coffee?
Yes, you can use Hyperchiller coolers for any cold beverage you’d like. They’ll effectively chill tea, juice, smoothies, and cocktails just as quickly as they cool your coffee. You’re not limited to coffee alone.
What Is the Warranty Period and Coverage for Hyperchiller Products?
You’ll find that Hyperchiller typically offers a one-year manufacturer’s warranty covering defects in materials and workmanship. You should check your specific product’s documentation, as warranty terms can vary by retailer and product model. You’re encouraged to contact customer service for detailed coverage information.
Do Hyperchiller Coolers Require Electricity or Batteries to Function?
You don’t need electricity or batteries to use Hyperchiller coolers. They’re completely passive devices that work through a double-wall design filled with cooling gel. You’ll simply freeze them beforehand, then they’ll chill your coffee quickly when you’re ready.
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