Cách sử dụng
Leaven is a word that is used to describe a substance that is added to bread dough to make it rise. It is often in the form of yeast or baking powder. Additionally, the word can also be used more generally to describe something that causes change or growth in a situation, like the leavening effect of new ideas on a group. So, if you are making bread or talking about a situation that needs something to grow or change, you can use the word leaven.