Our take While butter coffee is the morning beverage du jour, it’s not exactly a practical trail drink unless you’re packing in a cooler and a blender bottle. Each individual packet of Know Brainer contains a serving of brain-nourishing MCT oil and organic, clarified butter to ensure you stay in ketosis while out on the trail. Simply knead the packet before pouring it into your cup of joe for a morning drink that doubles as breakfast. With 200 calories and 19 grams of fat per serving, you may want to limit yourself to a single cup. Try the hazelnut flavor, which comes in both full-dairy and casein- and lactose-free varieties, but don’t expect a Starbucks-sweet drink: there’s no added sugar in these creamers.