Peanuts - groundnuts are surprisingly not nuts, but pulses. Seeds growing under the ground, where they move after impregnation. They are used for flour, oil, peanut butter ......
You will find them a lot for instance in Vietnam cuisine as topping of many dishes. In Indonesian cuisine there are essential part of gado gado or sate ayam in the form of sweet peanut sauce.
Boiled peanuts are spread tasty snack in Indonesia.