French Onion Soup (The Best)

Ingredients

• Soup

  • 6 yellow onions, peeled
  • ¼ cup (55 g) butter
  • ½ cup (125 ml) red wine
  • 2 tbsp (30 ml) cognac or brandy
  • 4 cups (1 litre) chicken broth
  • 4 cups (1 litre) beef broth
  • 1 tbsp light toasted flour
  • 1 pinch nutmeg

• Toppings

  • 2 cups (200 g) Gruyère cheese, grated
  • 12 slices baguette bread, about ½ inch (1 cm) thick, toasted
  • 1 small garlic clove, halved