After-oil method is to knead the materials except butter until smooth, and then add butter to knead and ferment evenly. Because oil can prevent the formation of gluten, no oil is added at the initial stage, but the dough should be kneaded with oil until the final expansion stage after it is smooth.

Bread, also known as bread, is a kind of food made of five kinds of grains (usually wheat) by grinding and heating. Baked food is made of wheat flour as the main raw material, yeast, eggs, oil and nuts as the auxiliary materials, mixed with water to make dough, and processed by fermentation, shaping, shaping, baking and cooling. The bag with the highest heat is the soft bag, also called "Danish bag". It is characterized by adding 20%~30% butter or shortening, which can form a special layered structure and can be made into croissants, raisins, chocolate cakes and so on.