Try this Tomato rasam recipe, or contribute your own.
Cooking on a strict ingredient budget requires liquids that pull double duty, extracting maximum flavor from minimal aromatics without wasting produce. Tomato rasam relies on acid and spice to create a complex broth using only a handful of pantry staples. When scaling this recipe upward to feed a larger group, do not multiply the dried spices at a strict one-to-one ratio; whole cumin, mustard seeds, and fenugreek can easily overwhelm a larger pot if doubled blindly. Instead, increase the base tomato and water volume first, then adjust the ground rasam powder gradually after the liquid reaches a rolling boil. Ripe, red tomatoes must break down completely until mushy, a process accelerated by adding salt early to draw out moisture. Letting the covered pot sit off the heat for five minutes allows the volatile oils from the final pepper powder and coriander stalks to infuse the broth fully. Stored in a sealed container in the refrigerator, leftovers develop a deeper tartness over twenty-four hours as the tamarind and garlic meld into the tomato base, making the second day flavor profile distinctly sharper than the first.