Not necessarily. You don't have to use butter to make bread cookies. Some kinds of bread do not need butter, and some can be replaced by other oils. Cooking oil at home is also one of the alternative types. Butter (pure butter) is generally used to make bread biscuits, but it can't be replaced by refined pork plate oil, colorless and odorless vegetable oil (refined pure vegetable oil) and salad oil, and the effect is slightly different, but sheep oil, lard oil, sesame oil, peanut oil and other oils with strong smell and color can't be used. It is best not to use synthetic vegetable butter such as wheat cream. In addition, if the oil is specially determined in the original formula, such as olive oil and peanut oil, it is best to prepare it according to the formula, and arbitrary changes will affect the sensory properties and quality of the finished product.