Pork Sloppy Joes - cooking recipe

Ingredients

1 (410 g) can diced tomatoes, drained a little (or a lot, depending on the amount of liquid, see UPDATE notes above)
1/2 cup tomato ketchup
1/4 cup chicken stock (perhaps use only if mixture seems too dry, see UPDATE notes above) (optional)
1 teaspoon Dijon mustard
1 -2 tablespoon soy sauce
1 tablespoon chopped fresh parsley
1 teaspoon brown sugar
1 teaspoon ground cumin
1 teaspoon chili powder or 1 teaspoon chili paste
440 g bought Chinese barbecue pork, shredded (or any other cooked meat, if you prefer)
4 large bread rolls
inner iceberg lettuce leaf
1/2 cup sour cream or 1/2 cup sour cream, to taste

Preparation

Put the tomatoes, ketchup, stock, mustard, soy, parsley, sugar, cumin and chilli powder in a heavy-bottomed pan. Stir and gently cook until the mixture is thick and fragrant.
Add the pork, stir well and briefly cook to heat through.
When the sauce is almost ready, heat the bread rolls in a preheated oven. Then slice them in half and top each half with lettuce, and the bottom half of each roll with a quarter of the pork mixture and a good dollop or two of the sour cream. Press down the top and serve with plenty of serviettes on the side.