In the south of India it is customary to pour a soup called a rasam over your rice toward the end of a large meal. The Tamil community in India resides largely in the very south and they are great drinkers of these soups, which are usually hot and spicy and made slightly tart with tamarind, tomato, lemon, or lime. Not all rasams are made thick, but when they are it is usually through the very gentle disentegration of toor dal, red lentil. Unlike lentils of other hues, red lentils fall apart entirely in tens of minutes of cooking, giving the soup a consistency something between that of broth and that of curry. Like most common soups, a family’s rasam will be some hybrid of a chefs specialty and whatever is on hand that day. Variations can be broad; in a curious cross-cultural adventure, rasam managed to spawn the not-very-similar English mulligatawny soup.
Anyone familiar with the cuisine of India knows that when it comes to spices the cook is spoilt for choice. The rasam that I have choosen to make features three distinct flavourings that are very common to cooking in the south. The first is asafoetida, a plant resin with a yellow colour and (when used sparingly) a sulfurous odor similar to allium. (Be warned that while asafoetida is usually sold ground with rice flour it can be mixed with wheat flour instead, so if it matters, read your labels and choose your brands.) The second spice is slightly bitter brown mustard seed, which is great fun: rather than grinding them, one heats them in a little oil until the seeds go pop, pop, pop! Finally, a handful of dried curry leaves (so hard to describe, nothing else tastes like the gentle warmth of curry leaves) go into the final seasoning. It is for the sake of the curry leaves that I go easy on the souring tamarind in this recipe, as I find that too much sourness somehow cancels-out the curry leaves. If unavailable one could substitute lemon juice for tamarind and add it off-heat at the end, but all of these flavourings can be found in an Indian grocer’s, especially if his or her custom is from the south.
This soup would be plenty tasty served the occidental way, alone in a bowl at noon. For a more traditional approach, serve over rice and perhaps a dab of melted ghee, in the company of the usual suspects: curries, chutneys, yogurts, popadums. We like it with a hard English apple cider (the hotter our meal, the sweeter our cider).
Tamil Red Lentil Soup (Rasam)
40 minutes; serves four
1 cup red lentils, washed
4 cups water
three whole cloves garlic
1/4 tsp asafoetida powder
1/4 tsp tumeric
3 dried bird’s eye chilies
12 black peppercorns
2 tsp whole cumin seeds
2 Tbsp dried coconut
3/4 cup good canned tomatoes
1 Tbsp tamarind paste
1/2 tsp salt
2 Tbsp sunflower or canola oil
1 1/2 tsp whole brown mustard seeds
handful of dried curry leaves (maybe 18 or so)
1. In a large saucepan place the lentils and water and heat to a boil. Skim the scum. Toss in the garlic cloves, asafoetida, and tumeric and simmer until the lentils have fallen apart, about 25 minutes.
2. In the meantime, place the chilies, peppercorns, cumin and coconut in a small heavy frying pan and toast them over low heat with stirring until the coconut turns brown. Remove to let cool.
3. Dice the tomatoes. If your tamarind is still on the stone, soak it off with some agitation (fingers are best) in a little water.
4. Once the lentils have collapsed, fish out the garlic cloves and add the tomatoes, tamarind and salt. Grind the toasted spices in a grinder or a mortar and add them, too. If the soup is too thick for you, add a little water. Too thin, simmer a little longer.
5. In that little frying pan add oil and mustard seeds and heat gently. When the seeds start to pop add the curry leaves and swirl them around for a minute to extract some of their flavour into the oil. Add this final seasoning (it’s called a tarka, by the way) to the soup. Taste for salt.
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