Red beans, notably tiny and dark red kidney beans, are high in iron, phosphorus, and potassium. They're also a great low-fat source of protein and fiber. Red beans contain phytonutrients as well. Frijol Rojo de Seda is, as the name implies, a silky, smooth, delicious red bean. It is extremely significant in Central American kitchens since it is sweet and regarded one of the best beans.