Cut the pork shoulder or belly into bite-sized pieces and slice the Vienna sausages diagonally.

In a frying pan, combine ketchup, soy sauce, sugar, black pepper, and gochujang. Heat on low until it starts to simmer.

Add the pork and Vienna sausages to the pan and stir-fry on low heat until the meat is cooked through.

Once the meat is cooked, add the chopped chili pepper and sprinkle additional black pepper.