Rye flour, also known as whole grain flour, sprouted flour, or whole flour, is a type of flour made from sprouted grain. Sprouted grain is soaked in water, which causes it to start germinating and release nutrients. This sprouted grain is then dried and ground into flour.

Unlike regular flour, which is made from un-sprouted grain, rye flour contains more nutrients, vitamins, and minerals. It is high in dietary fiber and also contains more protein and fat than regular flour.

Rye flour is often used in bread and other baked goods recipes to give them a grainy consistency and nutty flavor. It can also be used in smoothies, muesli, or other foods to give them a healthy and nutrient-rich boost.