Mix potato buds and 1/2 tsp of salt with 1 cup of hot water
Chop ginger, chillies, coriander leaves, and onion finely
Heat oil (about 5 table spoons) and add mustard seeds
Add chopped ingredients and fry till onions are brown
Add carrots, peas, turmeric and 1 tsp of salt and cook on low heat for about 10 minutes.
Add potato (now mashed) and fry for 5 minutes.
Remove from heat and add lemon juice and let it cool
Combine gram flour, 3 tbsps of oil, 3/4 cup water, 1/2 tsp salt, the baking powder and mix thoroughly
After batter is prepared, make small balls out of the filling and roll them in the batter. Then fry in hot oil. You will get about 20-30 small bondas.