French Onion Soup Recipe
How to Make Authentic French Onion Soup
Ingredients
- 3 tablespoons butter
- 2 tablespoons olive oil
- 4 yellow onions
- 2 tablespoons flour
- 1/2 cup dry white wine
- 4 cups beef broth
- 1 tablespoon worcestershire or fish sauce
- 4 fresh thyme sprigs
- 1 bay leaf
- 1 teaspoon salt
- 1 teaspoon umami seasoning optional
- 1 teaspoon black pepper
- 1 tablespoon sherry vinegar
- 8 slices gruyere or swiss cheese
- 4 slices french baguette see notes
Instructions
- Peel and slice onions.
- Melt butter and oil in pan. A cast iron frying pan will caramelize faster than an enameled cast iron.
- Keep the heat on low and turn onions every ten minutes for the next 40-50 minutes until the onions are a golden amber color.
- Season onions with salt.
- Stir in flour until all onions are covered.
- Deglaze with wine for about five minutes until alcohol burns off.
- Add in beef broth, thyme sprigs, bay leaf.
- Add in worcestershire or fish sauce and black pepper.
- Add in sherry vinegar to add brightness.
- If you can make this part a day in advance and then reheat for boosted flavor.
- Make sure you start with hot soup. Preheat broil on low.
- Dish out soup among four bowls. Top with toasted baguette and cheese.
- Broil on low mode of broil for five minutes.
- Top with chopped parsley or thyme.
Notes
Some french baguette are small and I used two slices per bowl, side by side.