Onion Tomato Thokku Recipe is a perfect side dish for idli dosa. It is tangy, spicy and delicious chutney prepared with flavourful ingredients.This thokku is perfect for travel. This is a very easy to do recipe and can be put together in minutes. A good tomato thokku is probably the easiest thing to make since most of the cooking time is passive and you can go about your other work while the thokku gets cooked on the stove.