Ingredients
- 6 large red or yellow onions, peeled and thinly sliced.
- Olive oil
- 1/4 teaspoon of sugar
- 2 cloves garlic, minced
- 8 cups of beef stock, chicken stock, or a combination of the two (traditionally the soup is made with beef stock)
- 1/2 cup of dry vermouth or dry white wine
- 1 bay leaf
- 1/4 teaspoon of dry thyme
- Salt and pepper
- 8 slices of toasted French bread
- 1 1/2 cups of grated Swiss Gruyere with a little grated Parmesan cheese
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