Boiled peanuts are popular in some places where peanuts are common. Fully mature peanuts do not make good quality boiled peanuts; rather raw, or green ones are used. Raw denotes peanuts in a semi-mature state, having achieved full size but not being fully dried, as would be needed for roasting or peanut butter use. Green denotes freshly harvested and undried peanuts that must be refrigerated. After boiling in salt water they take on a strong salty taste, becoming softer with prolonged cooking, and somewhat resembling a pea or bean, to which they are related because they are legumes and a nut only in the culinary sense.