Vegetarian French Onion Soup

Ingredients

• 3 quarts vegetable stock
• 12 dried shitake or porcini mushrooms
• 1 bay leaf
• 1 tablespoon tomato paste
• 1 tablespoon vegan Worcestershire sauce
• 1 teaspoon black peppercorns
• 2 tablespoons olive oil
• 3 tablespoons butter
• 1 tablespoon sugar
• 2 tablespoons flour
• 6-8 yellow onions
• 1 cup white wine
• 1 baguette
• ¼ minced parsley
• 1 cup shredded Gruyere
• salt and pepper to taste