Hungarian Creamy Pork Paprikás (Pörkölt / Paprikás Sertés)

Ingredients:

• 500 g (1 lb) pork shoulder, cut into bite-sized cubes
• 1 large onion, finely chopped
• 2 cloves garlic, minced
• 2 tbsp sweet Hungarian paprika
• 1 tsp smoked paprika (optional)
• 1–2 tbsp vegetable oil or lard
• 1–2 tomatoes, chopped or 2 tbsp tomato paste
• 1 green bell pepper, chopped
• 200 ml (¾ cup) sour cream
• Salt and pepper to taste
• Water or stock as needed