1, the role of hot oil scalding flour is to prevent it from sticking to the biscuit. The role of isolation layer, because the hot oil can put the flour in the protein hot "dead".

2, flour is a kind of wheat milled powder. According to the amount of protein in the flour, it can be divided into high-gluten flour, medium-gluten flour, low-gluten flour and gluten-free flour. Flour (wheat flour) is a staple food in most parts of northern China, and food items made from flour.