Yeast bread refers to a type of baked good made from flour, water, yeast and other ingredients such as sugar or salt. The process involves mixing these ingredients together and allowing the yeast to ferment the dough, which causes it to rise. Once the dough has risen sufficiently, it is shaped into a loaf and baked in an oven until it is golden brown and fully cooked on the inside. Yeast bread can come in many different varieties such as white, whole wheat or rye, each with its own unique flavor and texture.