Meanwhile, in a separate large pot, heat ghee (or butter/oil) on medium high for 1 minute. Add cumin seeds and allow them to sizzle for about 30 seconds. Add onions and cook until golden brown, about 10 minutes. Add garlic and saute 2-3 minutes. Stir in tomatoes, then add jalapeno pepper, garam masala, mango powder, turmeric, fenugreek, salt and cayenne. Reduce heat to medium and cook until oil glistens on top (about 5-8 minutes). Stir in reseved chickpea water or 1 cup fresh water if using canned chickpeas.