Can I eat butter on a casein (milk) free diet?
There is controversy about this. Butter may contain a trace amount of protein. Whether or not the protein is casein, one of the proteins in milk, nobody knows. For most people, eating butter in small amounts probably is OK. However, to be extra cautious, you can purchase clarified butter, called “ghee,” or make it yourself by bringing butter to a boil and skimming off the white part that floats to the top.
