Bread is a staple food in many cultures, and its ingredients are essential for making it. YEAST, FLOUR, and WHEAT are all common bread ingredients. YEAST is a type of fungus that helps dough rise and gives bread its distinctive flavor. FLOUR is made from grains such as WHEAT, rye, or barley, and is used to give bread its texture and structure. WHEAT is a cereal grain that is often used to make FLOUR for bread. All three of these ingredients are essential for making bread.