Wadiyan (also spelled Varian and Badiyan) are large balls of dried lentils, peculiar to the cuisine of the Punjab. They are sun dried spicy urad dal balls that serve to spice a dish and also to thicken the gravy. They are very spicy and each bite sends a burst of flavour to your tastebuds. They are also quite meaty in texture, and thus a good option for your non-vegetarian friends.
This dish cooks the wadi and potatoes in a tomato-onion-spiced gravy for a relative quick, definitely easy meal. Wadi go very well with potatoes, but can be cooked with other vegetables too. Today I have used a mixture of potatoes and sweet potatoes, or you can use butternut and potatoes. These mixtures are not really traditional, but work very well in the modern kitchen.
Because the wadi are extra spicy, not a lot of other spice is needed in the dish.