Usually, we eat fried fritters with added edible alkali, but the amount of edible alkali is not easy to be large, which cannot cause harm to the human body. Therefore, moderate consumption of fried fritters is not easy to cause harm to the human body. In addition, it is possible to make fried fritters at home. Many people are concerned about the practice and secret recipe of eating fried fritters, but we must pay attention to the proportion, It may not succeed at the beginning, but it needs to be tried again and again.
 Alum and alkali must be added when frying sesame seeds or steamed buns, and the success or failure of fried fritters depends on the preparation of alum and alkali in raw materials. Edible alkali is a kind of double salt with acid hydrolysis reaction, while surface alkali (edible soda ash) is a kind of sulfide with alkaline water content and crystal water. When alum and alkali are put into water, chemical reaction will occur between them, resulting in a lot of carbon dioxide vapor and precipitate aluminum chloride.
 When combined with the surface, the precipitate hydrogen rubs aluminum with the surface to form a membrane material, which encloses the carbon dioxide vapor. When the fried dough sticks are put into the hot pot, the carbon dioxide vapor is heated and deformed, causing the fried dough sticks to expand. This is the reason why alum and alkali should be used for frying sesame seeds.
 However, the preparation during the period must be handled well. More edible alkali will lead to more aluminum chloride caused by hydrolysis reaction, which will make the fried fritters hard, brittle and foamy when heated, and the oil consumption is high. If too much alkali is added, it will make the color of fried fritters yellow and improve their astringency. The ratio of alum to alkali is 25:35.
 To make traditional fried dough sticks, you must add edible alkali to make fried dough sticks more and more crispy and delicious. Eating alkali contains aluminum, and excessive intake will harm physical and mental health.
 Manufacturing raw materials
 5000 grams of wheat flour, 125 grams of salt, 60 grams of alum, 35 grams of soda, 5000 grams of edible oil (about 2000 grams).
 Practice:
 1. Put salt, alum and soda into a basin, add a small amount of warm boiled water and stir it vigorously. After it melts, pour 2500-3000g of warm boiled water. In addition, pour all wheat flour, mix it evenly, roll it into batter, dip it in water and roll it for a while. Spread a layer of oil on the cutting board, put the paste on it and knead it evenly, then you can fry it. 2. First cut 1000-1500 grams from the dough piece, slowly lengthen it, and use a walking hammer to make a small strip 0.6-1 cm wide, then fold the two pieces together (the oil should correspond to the oil level), hold the two sides separately, pull them to a length of 19-23 cm, place them horizontally in a hot pot, rinse them, when part of the oil in the home swells, pinch off the dough heads held on both sides, and put all into the pot, And use specially made long wooden chopsticks to quickly support them into a ring (two on one side) from the middle, turn over and fry them into pale yellow persimmons.
 Manufacturing points:
 1. The batter should be kneaded evenly and thoroughly until it is smooth;
 2. When frying, roll frequently, so as to be symmetrical in case of heat.