Whenever I go out for cantonese I always get this amazingly lovely dish of stir fried prawns and tomatoes. Usually it's just called "prawns with fresh tomatoes" on the menu and there is usually a bit of chopped onion and maybe a few peas in it. The sauce is a tomatoey sweet/sour mixture and I've tried preparing it at home but I dont know what the ingredients are.
I found a picture of the exact dish I am talking about
See how the sauce is a bit glossy and tomatoey? I'm thinking that is achieved with corn starch, but I dont know what the base could be.
Any help? Also, if anyone knows the traditional cantonese name for the dish can you let me know? (might make it easier to find a recipe if I know the actual name for it)