Baking powder is a kind of compound leavening agent, which is white powder made of soda powder with acidic materials and corn flour as filler, also known as foaming powder and baking powder.

Sodium bicarbonate, chemical formula NaHCO? Commonly known as baking soda. White fine crystals, less soluble in water than sodium carbonate.

Old flour (flour screwdriver) refers to the flour seed of dough, which is called flour primer in the north and flour head in some places. It is a small dough left when steaming steamed bread, because there are many yeasts in it, which will be used as a strain next time.

2, the use is different

Application of baking powder in rapid fermentation of grain products. In the production of cakes, cakes, steamed buns, steamed bread, shortbread, bread and other foods, the dosage is large.

Baking soda is used for mass production of steamed bread, fried dough sticks and other foods.

Flour screwdriver, steamed bread with flour.

3. The principle is different

Baking powder is a white powder with baking soda powder and other acidic materials, and corn flour as filler. Baking powder reacts when it is in COntact with water, and acidic and alkaline powders are dissolved in water at the same time, and some of them will start to release carbon dioxide (co? ), at the same time, in the process of baking and heating, more gas will be released, which will make the product expand and soft.

Melted water of baking soda powder is mixed into noodles, and after heating, it is decomposed into sodium carbonate, carbon dioxide and water, and carbon dioxide and water vapor overflow, which can make food more fluffy and sodium carbonate remains in food.

The dough screwdriver leaves a piece of dough when making pasta the day before, allowing it to ferment by yeast. The next day, mix the dough with warm water and knead it in a new material, and you can ferment it.

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