Carp Soup

Ingredients

• 1/2 lb potatoes, peeled and cubed
• 1/4 lb carrots, peeled and sliced
• 1 tsp butter
• 1 None onion, peeled and finely chopped
• 1 None leek, trimmed and sliced
• 1 None garlic clove, peeled and minced
• 1/2 tsp ground cumin
• 1 tsp paprika
• 1 tsp dried marjoram
• 2 cups vegetable stock
• 1 tbsp tomato paste
• 1 lb carp fillets, skinned and cubed (substitute cod or tilapia, if desired)
• 1 small handful watercress, thick stems removed