Soak moong dal, chana dal and masoor dal in separate bowls overnight. Wash and drain each of one the next morning. Place them separately on paper towels to allow the water to be absorbed. You may need to rub them with a kitchen towel as well, depending upon the weather in your area.
When the lentils are slightly moist but not wet, deep fry each one by one. To check the doneness of the lentils, take little dal and drop on a platter from a bit of height, if the dal bead makes solid sound when dropped, then the dal is perfectly cooked from inside.
Deep fry poha and set aside. Then deep fry peanuts and set aside.
Grind together sugar, salt and tartaric acid. Set aside. Do not skip this step. It is essential for even mixing of salt and sugar to stick to each grain of namkeen. If you skip this step then, the salt tends to settle down at the bottom, leaving the end portion of namkeen very salty.
In a wok heat 1 tablespoon of oil. Add bay leaves, black pepper, cashews and raisins. Gently roast them for 1-2 minutes. Remove them and set aside.
In a large vessel or wide spread container, add all the ingredients along with sev, papdi and aloo lachcha.
Add salt-sugar mix and roasted cumin seeds as well. Mix well. Allow the namkeen to cool completely.
Store in an air-tight container and enjoy with a cuppa.