Thengai dosa, also known as coconut dosa, is a popular South Indian breakfast dish. Made with a batter of rice, coconut, and urad dal, this dosa has a unique flavor and texture. The addition of coconut gives it a slightly sweet and nutty taste. Thengai dosa is crispy on the outside and soft on the inside, making it a delightful treat. It is usually served with coconut chutney and sambar.