1.I soaked black bean in hot water for 4 hours. You can either follow this procedure or soak it in normal water for 7-8 hours
2.I directly cooked this gravy in cooker, instead you can also cook black bean and masala separately, and finally add black bean to the cooked masala (same procedure can be followed for cooking rajma / channa / moong bean or any dal)
3.Since bean is directly cooked in gravy, add same quantity of water as bean to maintain gravy consistency