How did ancient people do their hair? Without yeast, will you use alkali or acid?

Satisfied answer ╮ (╯ ε ╰) ╭ Grade 5 2011-02-17 No yeast. You can use the old dough left over from last time. The most traditional way is to ask: How was the last dough made? Answer: We don't have to use dough that can rise. We also have this situation in our lives. When we kneaded the dough, we found that it didn't ferment. If you can't eat it after steaming, you will choose to keep the dough later. The same is true, because if the dough doesn't stand, as long as the temperature is right, it will rise by itself (fungi can be seen everywhere in our living environment), and we artificially add things to speed it up and make the dough rise better. The reason why we want to add some soda ash to the dough is to neutralize the acid produced by fermentation in the dough. If you don't add it, it won't taste so good. Therefore, there is no need to add anything to Todoki's testimony in the first piece of old noodles: thank you very much.