Kidney bean salad makes a good snack to binge on. It should be consumed regularly by vegetarians.
Take a wide bowl. Add the boiled kidney beans. Put the onion and tomato pieces to it.
Mix the ingredients, "For the dressing" in a bowl.
Pour it over the beans, chill and serve.
Soak the kidney bean in water for eight hours. Drain the water, wash under running water and cook in the pressure cooker for a couple of whistles. They should be soft to eat. Do not remove until the pressure is released by itself.