Curry leaves are a staple of South Indian cooking, and they have a flavor that's hard to place and impossible to forget — aromatic, slightly citrusy, with a warm herbal depth that blooms the moment they hit hot oil or ghee. Start there: let them sizzle in fat for a minute before adding anything else, and you'll understand why South Indian cooks treat them as a foundational step, not a garnish. From there, they're right at home in dal, rice dishes, coconut-based curries, and chutneys.