Melt ghee in a wok or skillet. Add ginger, garlic & onion & stir fry for 1 minute. Add garam masala, chili powder, pepper, salt & soy sauce. Stir-fry for 30 seconds. Add vegetables & mix well. Remove from heat & place in a bowl. Add tofu & toss well. Allow to cool & drain off excess liquid. Put 1 tb of filling into each momo wrapper & seal closed with a little water.