Most of the time, butter is made from cows' milk, butter can also be made from the milk of other mammals, like sheep, goats, buffalo, and yaks. Salt, flavorings and preservatives are sometimes added to butter.
Many people use butter in their foods instead of oil.
Cultured butter is a butter made from a fermented cream. Sweet cream butter is butter made from pasteurized fresh cream. Raw cream butter is butter made from fresh or cultured unpasteurized cream.