Fat bombs are a keto diet supplemental food that is usually made from a combination of ingredients like butter, coconut oil, nuts and seeds. They were designed specifically for the keto diet. Since keto is a high-fat, low-carb-diet these treats are often very high in fat and low in carbs. Some have moderate levels of protein but the key macronutrient in a fat bomb is, of course, fat. Fat bombs can help when you need a quick snack and want to stay in ketosis. Check out the keto chocolate fat bombs below.