Canned beans are stored in a mixture of water and salt to help preserve them. Over time, the beans will naturally release starch into the liquid the longer they are stored. Rinsing canned beans can help reduce the sodium quantity you are eating and improves the texture of the dishes you are using them in. Another amazing benefit of rinsing beans is improved digestibility, as our bodies can have a hard time digesting certain types of starch present in the liquid.