French onion soup

Ingredients

• 2 tablespoons butter
• tablespoons vegetable oil
• 5 large onions, sliced
• 1 teaspoon dried thyme
• 1 tablespoon sugar
• 1 tablespoon sherry vinegar
• 2 tablespoons all purpose flour
• 1 vegetable soup cube
• 2 tablespoons curry powder
• 50 g grated cheese
• Salt and pepper to taste

For the roasted bread :

• 2-3 slices of French bread
• Garlic butter
• 50 g cheese grated