Wash the chick peas changing the water 2-3 times. In a blender mash the chick peas with one cup of water just churning few times. Chick peas should be mashed not pasty.
Heat the oil in a pan over medium heat add the besan and roast the besan stirring continuously until besan is golden brown this should take about a minute.
Add ginger and green chili stir for 30 seconds, add chick peas, salt, cumin seed powder, garam masala, and mango powder.
Cook over low heat for about 10 minutes if needed add water, chick peas should be consistency of dosa or pancake batter.
Turn off the heat, spiced chola topping should be served hot with crispy aloo tikki.