Source: Based Cooking (community recipes)
Brew your coffee at 90–95°C and pour it into the blender while still steaming. This temperature is critical: cooler coffee won't emulsify the fats properly, and you'll end up with separated puddles of oil floating on top. Add 15g of unsalted butter and 15g of coconut oil directly to the hot liquid. The heat does two things at once — it keeps both fats in their liquid state and primes the blending action that follows.
Blend on high speed for 45–60 seconds. You're looking for a persistent foam that sits on top of the coffee and holds its structure for at least a minute after pouring — this is the marker of proper emulsification. The vigorous action breaks the fat molecules into droplets small enough to suspend in water rather than float. If you see the foam collapse within seconds or notice an oily sheen separating, your coffee was too cool or you've under-blended. Run it again for another 30 seconds. The emulsifier in butter — lecithin — helps stabilise the mixture, which is why straight coconut oil alone produces a greasier, less stable result.
Pour immediately into your serving cup. The foam will begin to settle almost at once, which is normal. Within two minutes you'll have a layer of microfoam sitting atop a creamy coffee, the two distinct but integrated. Drink while the microfoam is still present; once it collapses fully, the drink reverts to a standard oily coffee.
The point of this drink is the texture and mouthfeel created by the emulsion, not the nutrients or the supposed metabolic claims attached to "bulletproof" coffee online — ignore that noise. What you're actually making is closer to a wet cappuccino in structure: gas-infused fat suspended in liquid. The appeal is genuinely the velvet coat that the emulsified fats leave on your palate, and the way they slow the absorption of the caffeine, which can reduce the jitter that comes with black coffee on an empty stomach. If you've blended correctly, the drink should taste buttery and rich, never separating or grainy.
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