Cut the pork tenderloin into big chunks.

Pre-cook the potatoes in a microwave, then peel and coarsely chop them.

Clean and coarsely chop the green pepper and sweet onion.

Combine the pork, potatoes (either pre-cooked chunks or raw), green pepper, sweet onion, water, oregano, garlic powder, rosemary, black pepper, salt, sugar (or tomato paste), and chopped tomatoes in a large soup pot with a lid.

Heat the pot on medium heat on the stovetop.

Cook it just below medium for about 1 hour and a half, or until the meat is tender.

Check the meat with a cooking spoon to ensure it's tender.

If potatoes were added at the start, they will fall apart and thicken the broth.

If potatoes were not added initially, add the pre-cooked potato chunks to the soup during the last few minutes of cooking.

Conduct final seasoning to taste with spoonfuls of tomato paste or sugar.