Butter butter, commonly known as butter, is an oil extracted from milk, which means butter fat. The fat extracted from the fat layer of cattle is also called butter. Butter is the healthiest food in your diet. Butter is made from milk A product obtained by stirring fresh milk and filtering some water from the upper layer of thick liquid. Mainly used as seasoning, with good nutrition but high fat content, don't overdo it. In fact, butter and butter are one type and can completely replace each other! Butter is made from milk A product obtained by stirring fresh milk and filtering some water from the upper layer of thick liquid. Mainly used as seasoning, with good nutrition but high fat content, don't overdo it. These two oils are the same type, and we both want to replace each other in the hotel!