This is also one of the most popular dal variety of Andhra..................
1cup,toor dal/kandi pappu, 1lb.cucumber(peeled,cut into cubes), 1/2onion(roughly chopped), 2 green chillies(chopped), 2tbsp.tamarind paste, 2sprigs curry leaves, 2tsp.oil, 2whole red chillies, a pinch of asafoetida, 1/2 tsp. mustard seeds,1/2tsp. jeera, 1/2 tsp urad dal, 1/4tsp.turmeric powder, 1/2tsp.red chilli powder, salt to taste, Coriander leaves for garnishing.
Pressure cook toor dal, cucumber pieces, onions and green chillies, for 3 whistles and let it cool. Now in a pan add oil, once it is hot add urad dal, whole red chillies, mustard, jeera, asafoetida and curry leaves,once they start to splutter, remove from the heat and add it to the cooked dal and mix well, then add salt, red chilli powder, tamarind pulp and cook it on the medium heat for about 8min. Garnish it with chopped coriander leaves and serve it hot with streamed rice.