Masala dal (garlicky spiced lentils)

Method

1. Pour 600ml boiling water into a saucepan. Add the lentils and turmeric. Simmer, partially covered, for 15-20 minutes until they have softened and absorbed most of the water. Add more water if necessary. Remove from the heat.
2. In another saucepan, heat the oil over a medium heat. Add the mustard and cumin seeds. When they begin to crackle, add the ginger, garlic, curry leaves and chilli. Fry for 1 minute, then add the garam masala paste and tomatoes. Fry for a few more minutes, then spoon into the lentils. Season with salt, to taste.
3. Bring to the boil, then stir in the coriander and lemon juice.