This is a traditional recipe from eastern UP usually prepared during Makar Sankranti. It is a kind of substitute to dahi wada. It is usually spicy but you can relish it with sweet tamarind chutney. I like it spicy so here is how i make & relish it..
Soak dal for about 4 hrs. Coarsly ground it by adding very small amount of water along with ginger,green chilli, cumin seeds,asafoetida,.Keep it aside for 15 min.
Meanwhile add a glass of water in the curd & mix it well. Add remaining salt & all other spices in curd.Heat a wok & put oil to it. Wet your hand & make small balls of dal mix & deep fry.
Take them on kitchen towel & then put these balls into the curd mix. Let them soaked for atleast 1 hr.These balls will absorb curd & the mix becomes thick. While eating you can top it up with some more cumin powder & mint powder.
You can also add fresh chopped corriander. Serve at room temperature along with khichdi of your choice.
Notes
You can serve it by adding green / tamarind chutney.