Prep the Veggies: In a mixing bowl, add the finely chopped cucumber, tomato, and onion.
Add Crunch and Flavour: Add the coarsely crushed roasted peanuts to the bowl. Sprinkle in the sugar, salt to taste, and a little fresh coriander. Give it a good dry mix.
Mix in the Curd: Pour the whisked, thick curd into the bowl. Mix everything well until the vegetables are beautifully coated in the creamy yogurt. Set the bowl aside.
Prepare the Tadka: Heat a small tadka pan on the stove and melt 1 tablespoon of ghee. Add the mustard seeds and let them splutter. Then, add the cumin seeds.
Aromatics: Add a pinch of asafoetida (hing), the finely chopped green chilli, and the fresh curry leaves. Turn off the heat and let the tadka cool down just slightly.
Combine and Serve: Pour the warm tadka over your prepared yogurt mixture and mix it thoroughly. Garnish with a little more fresh coriander. Your delicious Maharashtrian Koshimbir is ready!