Soak soya chunks in hot water for 20 mins. Squeeze the water completely and wash again with water (cut into two halves if the chunks are big).
Heat 2-3 tbsp oil in a pan or kadai and tamper mustard seeds.
Tamper fennel seeds and curry leaves.
Add chopped onions and fry for few mins.
Add ginger-garlic paste and saute a while.
Add soya chunks and tomato-chili sauce.
Mix well and fry for few mins. Add pepper powder, mint leaves and salt to taste.
Cook for 5-8 mins and serve hot with chappathi, bread or as snack.