They’re full of many essential nutrients, including protein, fiber, and potassium. Dry peas are rich in fiber and folate and are a good source of protein and vitamins and minerals such as potassium, iron, copper and magnesium. Other notable vitamins and minerals in dry peas include selenium, zinc, choline and calcium. Dry peas are used whole in confectionery and snacks or milled to produce split peas for making soups, ‘dal’ (a curried soup-like preparation widely used in the Indian subcontinent), flour, and canned products such as mushy peas.