1Thinly slice 3 red or sweet onions, sprinkle with 1 tablespoon kosher salt, and drain in a colander for 1 hour. Rinse and pat dry.
2Dissolve 2 tablespoons dark brown sugar into the juice of 1 lemon and a little hot water and mix with the onions.
3Add 3 thinly sliced tomatoes, 1 thinly sliced green pepper, 1 thinly sliced green or red chile, 1 tablespoon grated ginger, 2 tablespoons chopped cilantro, and salt to taste. Serve as a relish with naan, pappadam, and other Indian breads or with tandoori dishes.