If you’re trying to make homemade bread but don’t have yeast (and don’t want to run to the store) don’t worry, you have options! The way yeast works is this: it’s a fungus that reacts with water and then eat the sugar in the flour of your dough to create carbonated bubbles. Those bubbles create air bubbles in the dough, making it rise. There are other simple kitchen ingredients that have much the same effect as yeast if you don’t have real yeast on hand, however. So don’t worry, bread lovers, we’ve written it all out for you in the gallery in front of you.