Baked Potatoes À La Bolognese

Ingredients

• 4 None large baking potatoes
• 1 tbsp olive oil
• 10.5 oz ground beef
• 1/4 lb carrots, finely diced
• 1/4 lb leeks, finely diced
• 1/4 lb celery, finely diced
• 1 None onion, finely diced
• 2 tbsp tomato paste
• 3/4 cup dry red wine
• 1 - 15 oz can chopped tomatoes
• 8 sprigs fresh marjoram, 4 sprigs chopped, 4 sprigs reserved to garnish
• 1/4 lb Gouda cheese, grated