Calypso shelling beans are believed to be native to the Americas, specifically the Caribbean region where they were grown approximately four hundred years ago. These beans, once shelled, are easily distinguished by their skin's trademark yin-yang like pattern, which will become more pronounced with age. Besides, when cooked, they will be plump with a velvety smooth texture and will offer a nutty, starchy potato-like flavor. Nutrition-wise, Calypso beans are high in protein and offer some potassium, iron, zinc, thiamin, magnesium and calcium. These beans are also low in calories and fat, and therefore they are a great weight-loss food