Soupe aux Légumes de Maman

Ingredients

• 4 leeks
• 1 small cabbage
• 3 celery ribs
• 2 turnips
• 2 cups canned (whole or chopped) tomatoes
• 4 carrots
• 2 medium potatoes, 12 ounces total
• 2 garlic cloves, peeled
• 2 bay leaves
• 2 sprigs of parsley
• 2 sprigs of fresh thyme
• 1 onion, peeled and thinly sliced
• 4 tablespoons butter
• Salt
• pepper