Sweet and Sour Sauce (Homemade)

Ingredients:
Garlic
Oyster sauce and tomato sauce (1:1)
Sugar (half a tablespoon to start with if two tablespoons of oyster sauce)
Salt to taste
Shallots/big onions
tomato
cucumber and carrot (optional)

1. Fry fish (season with salt, dab with cornflour) or chicken (season with salt and oyster sauce, dab with cornflour). Put aside.
2. Fry garlic until fragrant. Add in sauce (oyster sauce +ketchup+ sugar). Add in tomato wedges, cucumber and carrot. Stir fry. Add cornflour diluted with a little water until sauce becomes concentrated. Add sugar and salt to taste.