buttermilk直接喝有什么营养?答:\x0d\x0aIt is an excellent source of potassium , vitamin B12 , calcium , and riboflavin , and a good source of phosphorus .\x0d\x0a它拥有钾、维生素B12、钙和核黄素以及磷。\x0d\x0aIt also contains zinc , magnesium , pantothenic acid , niacin , thiamin , folic acid ,...