Place tamarind in a heatproof bowl and add 1 cup of hot water. Set aside.
Add lentils, crushed garlic, salt, red chili and turmeric powder and 4 cups water to a medium-sized stockpot. Bring to boil, lower heat and cover with a tight-fitting lid.
Stir the daal occasionally to make sure it’s not sticking to the pot (it will depend on the type of pot you are using).
While the daal is cooking, begin to squeeze the tamarind pulp well separating the paste from the fibers. When the pulp is fully separated from the seeds, strain the tamarind water into a clean bowl.
After about 35-40 minutes, remove cover and check daal for doneness.
If the daal is soft, use the back of a wooden spoon, to press the daal against the pot to give it an even consistency.
Add the strained tamarind water to the pot, stir and bring to a simmer.
Remove from heat after 5 minutes and begin to get the tadka ready. In a small frying pan, add oil and heat until it begins to shimmer. Add the dried red chilies and fry for a few seconds. Add cumin seeds and fry for 30 seconds or until fragrant. Add kadi pata and fry for a few seconds. Remove from heat and pour tadka over the daal. Serve with plain long-grain rice.