Hungarian Chicken Goulash

Ingredients:

• 2 tbsp oil or butter
• 1 large onion, finely chopped
• 2 cloves garlic, minced
• 600g chicken (thighs or breast, cut into pieces)
• 2 tsp Hungarian paprika
• 1/2 tsp black pepper
• 1 tsp salt (adjust to taste)
• 1 tomato, chopped (or 1 tbsp tomato paste)
• 1 green bell pepper, chopped
• 2 cups chicken broth or water
• 1 tsp dried marjoram (optional)
• 1 bay leaf
• 1/2 cup sour cream (optional, for serving)