Choose glass or high-quality plastic:
When you’re shopping for your Bulletproof Coffee blender, make sure you’re picking one that can stand up to high heat and fats day-after-day. A low-cost blender is OK if you’re on a budget, but be warned — cheaper plastic doesn’t handle fats and heat so well,[1] and the jar could crack, says Dave. Your best bet is to choose a blender based on its reviews, and avoid those that reviewers say crack easily when blending Bulletproof Coffee and other hot liquids.
Choose a blender with high-quality plastic containers
You might think that glass containers are best, since plastic has the reputation of leaching chemicals into your food and drink when heated. However, even the most high-end blenders use plastic containers. They’re more durable, they won’t shatter when exposed to extreme temperatures, and they won’t crack when pieces of food are ricocheting inside at high speeds. In fact, blenders that use glass containers are often less powerful, as the manufacturers don’t want them to break under high blending speeds.
Most blenders use BPA-free plastic containers, but you should always double-check to be sure you’re not being exposed to this harmful chemical.
Avoid inversion blenders
Inversion blenders are the type with the container that fits upside-down on its base. These don’t do well blending bulletproof coffee because the heat of the liquid can seep through the seal and cause spills. It can also damage the motor over time for the same reason. It’ll shorten the life of the blender, and you’ll end up having to replace it after only a short time.
Avoid inversion blenders: You also want to avoid “upside-down” blenders like the Nutribullet. They’re great for smoothies, but not so great for hot drinks. “When the heat builds up, it sends hot liquid through the seal, causing spills,” says Dave. Day-after-day, these leaks seep into the blender’s motor, shortening its lifespan.
While some of the blenders on this list cost a few hundred dollars, it helps to view it as a long-term investment in your health. A one-time payment will yield years of fat-burning, brain-fueling coffee, nutrient-dense smoothies, vegetable mash, and creamy soups.
Choose a blender with sharp, durable blades
The blades might not seem as important when you’re blending liquid like coffee with soft foods like butter and oil, but you still need them to be durable. They’ll be exposed to high heat every day, which can dull inferior blades.
Pre-programmed settings take the guesswork out of blending
Blenders with pre-programmed settings, particularly for hot liquids, make blending even easier. The blender picks the optimal speed and time for whatever you’re blending, so you can just press a button and walk away.
Choose a blender with a stable base and secure-fitting lid
You want a base that won’t wobble and a lid that stays on without having to hold it down. This is true for anything you’re blending, as you don’t want a mess all over your kitchen, but it’s especially true for hot bulletproof coffee. You don’t want the base to be so unsteady that it topples over and spills hot coffee on you, and you definitely don’t want a lid that pops off, only to spray hot coffee in your face. Bases and lids that are made properly are important!
Wattage and RPM matters
Blenders come in wattages from 500 to 1500, but the smoothest smoothies and the creamiest bulletproof coffee will come from blenders with a minimum of 1000 watts.
RPM is the speed of the blades. Blenders that have a wide range, like Vitamix’s range of 500 to 25,000 RPM, are desirable because then you can control how quickly things are blended. High RPM speeds are great for pulverizing and crushing ice, and low RPM speeds are better for more delicate tasks like whipping and chopping.