Hot and Sour Soup

First cook the onions and ginger garlic paste in a kadai with little oil. Then add chopped cabbage carrot and cook for two mins let it not cook fully it should be crunchy, then add the chopped capsicum soya sauce and vinegar and cook for two mins let this also be crunchy. Then add salt and water let it boil once. To this add the cornflour mixture and boil once and switch off. Add tomatoe sauce and transfer to serving bowl and add spring onions for garnish.