Tropical nuts are a type of nut that is grown in tropical climates. Kola, CASHEW, and BETEL are all examples of tropical nuts. Kola is a nut native to the tropical rainforests of Africa, and is often used as a flavoring for soft drinks. CASHEW is a nut native to Brazil and other parts of South America, and is often used in cooking. BETEL is a nut native to India and Southeast Asia, and is often used in traditional medicine.