Kollu Masala Vadai is a popular South Indian snack made with a combination of lentils and spices. It is a crispy and flavorful deep-fried fritter that is perfect as an appetizer or tea-time snack. The main ingredient, kollu or horse gram, is known for its high protein and fiber content. The vadai is made by grinding soaked lentils with spices and onions, shaping them into patties, and frying until golden brown. Serve hot with coconut chutney or tomato ketchup for a delicious and satisfying snack.