- In a large kadai heat 3 tsp olive oil and saute 2 clove garlic, 1 inch ginger. also, saute 2 tbsp spring onion slightly. now add ¼ cup sweet corn, ¼ cup carrot and ¼ cup beans. saute for 2 minutes. transfer the sweet corn paste and saute for 2 minutes. further add 3 cup water, ¾ tsp salt and stir well. cover and boil for 15 minutes. now prepare a corn flour slurry by mixing 1 tsp corn flour in ¼ cup water. mix to a lump free mixture. pour the corn flour slurry and stir well. stir and boil until the soup thickens. now add ¾ tsp pepper, 2 tsp vinegar and 2 tbsp spring onion. Serve hot.