This cooling condiment pairs well with any spicy dish, like Stir-Fried Cabbage with Red Pepper and Peas or Tofu Saag. Fragrant tempering oil stirred in at the end gives a huge flavor boost. Look for curry leaves at Asian markets, or omit if unavailable. Add leaves to pan with care--they cause hot oil to splatter. Adding the salt just before serving helps keep the grapes from releasing too much liquid.