Kulambu, from South India, is typically a tangy, tamarind-based stew, while a North Indian curry is a broader term encompassing dishes with gravy, often richer and creamier, using ingredients like yogurt or nuts.
The primary difference lies in the base and flavor profile. Kulambu, a staple in South Indian cuisine, relies heavily on tamarind pulp for its sour and tangy taste. It often includes lentils, vegetables, and a unique blend of spices like fenugreek, mustard seeds, and curry leaves. The consistency is usually thinner, resembling a stew.
North Indian curries, on the other hand, are more diverse. The base can vary widely, including tomatoes, onions, yogurt, cream, or nut pastes. Spices like garam masala, cumin, coriander, and turmeric are common. North Indian curries tend to be richer, creamier, and often milder in terms of heat compared to kulambu. Examples include butter chicken, korma, and saag paneer. The term 'curry' itself is a broad umbrella term used by Westerners to describe a variety of Indian dishes with gravy, but within India, specific names like kulambu, korma, or vindaloo are used to differentiate the dishes.
When substituting ingredients, remember that the sourness of tamarind in kulambu is key. If you don't have tamarind, a combination of lemon juice and a touch of brown sugar can help mimic the flavor, but it won't be exactly the same.