Boiled pork and cabbage tomato

Ingredients (3 to 4 servings)
Pork 150g
Cabbage 1/4
Boiled canned tomatoes One can
Onion 1/2
Salt, pepper Moderate amount
Ketchup 1 tbsp
Soy sauce 1 tsp

1 Stir-fry pork, sliced onion and chopped cabbage.
2 Add canned tomato and a little salt. Mix it with 1 then cover the pan.
3 Remove the lid when cabbage wilted.
4 Add ketchup, soy　sauce, salt and pepper to taste.