French Onion Soup | The Gourmandise School

Ingredients

• 3 Tbsp butter
• 1 Tbsp olive oil
• 1 1/2 lbs yellow onion, thinly sliced (about 5-6 cups)
• 1 tsp kosher salt
• 1/2 tsp sugar
• 3 Tbsp all purpose flour
• 1 cup red or white wine
• 2 quarts beef stock
• 1 bay leaf
• 1/2 tsp ground sage
• salt and pepper to taste
• 1 baguette
• 1/2 lb gruyere