Originally cultivated in the late eighteenth, early nineteenth century in the Netherlands, Dragon Tongue Shelling beans are pale pistachio green in color, rather petite in size and ovate and slightly curved in shape. When cooked, these beans develop a savory, rich and almost meaty flavor. Besides, they can be prepared simply as one would standard green beans, pod and all. It is worth noting that just one cup of these beans contains 36 percent of your daily recommendation of manganese. Adults require about 11 milligrams daily. Why is manganese important? It does a lot of things, but your bones love it since it helps increase bone mass. Additionally, it helps reduce calcium deficiency.