Radish and tomato rasam....my style

Ingredients

• 1 bunch of red radish, sliced, without greens
• 3 medium tomatoes finely chopped
• 1 lemon size taramind soaked in water
• 2 tea spoons oil
• 1 tea spoon cummin seeds
• 1 tea spoon mustard seeds
• 1 tea spoon cumin powder
• 1 table spoon rasam powder
• 1 tea spoon sugar
• 8-10 curry leaves
• Salt to taste
• 2 1/2 cups of water
• 1 tea spoon lemon juice (optional)
• 2 table spoons chopped coriander