Line water can be replaced with edible alkali. The ingredients of soda water and edible alkali are almost the same. Edible alkali is NA2CO3, also known as soda and soda ash. Its scientific name is sodium carbonate. It is used to neutralize excess acidity in traditional dough fermentation. The pH of saturated sodium carbonate solution at room temperature is The value is about 12, and the solubility of sodium carbonate at 30°C in summer is 39.7g/100g water, and the approximate ratio is about 1:3.