Soak the Vaal overnight, change the water in the morning and by evening if they appear puffed then wrap them in a damp cloth and set aside in a vessel with a lid to create an environment warm enough to allow them to sprout
Remove sprouted vaal into a bowl and pour like warm water on them, stir with your palms to loosen the skin and many will float to the top, decant the water and remove all the rest of the skins and discard
Heat the oil in a saucepan and dust some asafoetida and throw in the mustard and cumin.
When the cumin seeds begin to pop, throw in the garlic with their skin on and smashed to flatten them and as they turn colour and release their aroma, add the chopped onion.
When the onion turns a delicate pink add turmeric powder, red chilli powder and then add the vaal/field beans.
Now add the turmeric, red chilli, coriander and cumin powders and quickly stir in enough water to cover the beans
On a low flame cook with lid
When the vaal is almost done, add the jiggery, coconut paste and the tamarind paste or the water from the dried tamarind which has been soaked or dried kokum soaked in water and when the vaal are done add salt and garnish with finely chopped coriander.
Valache Birdhe or field beans curry is best enjoyed with steaming hot rice