The term 'cluster beans' is a type of vegetable that is also known as guar. Guar is a legume native to India and Pakistan, and is widely used in Indian cuisine. It has a mild flavor and is often used in curries, soups, and salads. The beans are high in fiber and protein, and are a good source of vitamins and minerals. They can be cooked whole or split, and are often used as a thickening agent in sauces and gravies.