Molasses contains 50% sugar. Because horses have a sweet tooth, feed with a little bit of molasses is very tasty. The sugar in molasses is a direct energy source of so-called ‘fast energy’ for horses. If you give your horse a lot of work to do, it is necessary to include sugar in the hard feed as a source of energy. That is why molasses is often used in horse feed. In addition, molasses is a good source of potassium.