When I was growing up in the 1950s in the San Francisco Bay Area, French restaurants always listed onion soup — soupe à l’oignon gratinée — on their menus. The soup was beef broth and onions. On top was a slice of toasted bread slathered with melted cheese. So common was this preparation that one of the country’s largest food producers, Campbell, sold, and still sells, a canned soup they call French Onion Soup. Inside the can is a mixture of beef broth and onions. (The cheese and bread you have to provide yourself!) I guess I shouldn’t be surprised, but in all my trips to France I haven’t found onion soup like this.

While researching another article, I came across many onion soup recipes and one fact began to stand out — in France, onion soup is generally not made with beef broth. When I took a more systematic approach of checking every French-language source I possess in my library, I only found recipes that used water or chicken stock. (There was one exception, a recipe from a Lyon restaurant that uses the broth from pot au feu.) When I expanded my search to include translations from original French sources, beef broth began to seep into the recipes, but the author usually admitted that the recipe was “adapted” from the French original.

A search on the internet using the search term “soupe à l’oignon” yielded 1,620 pages as possible matches. I found many French-language sources that used beef broth, but upon further examination I found that these pages were from Canada, not from France.

So what difference does it make if the French make their onion soup with water or chicken broth and the rest of the world makes French onion soup with beef broth? Not much, except that if your mind says onion soups should taste like beef broth, the soup in France may be a bit disappointing. This is unfortunate since onion soup in France can be great, just different from what one may expect. The first time I prepared an onion soup made with water instead of beef broth, the flavor seemed lacking, but as I worked my way through a large bowl, the subtleties of the flavors began to shine as my expectation for the flavor of beef broth began to dim.

Onions have been plentiful and inexpensive for thousands of years. To make a soup that combined this plentiful vegetable with water seems like a logical thing to do. Adding bread to the mixture also seems like something that could have existed for a long time. In La Cuisine du Marché, Paul Bocuse presents a recipe for gratinée lyonnaise that uses the natural sweetness of onions to their fullest. (When this same recipe is listed in two separate English-language cookbooks that were translated and adapted from the French, the water is replaced by beef broth.) Bocuse claims this to be the original onion soup preparation, ideal for late night snacks, not the “imitations” formerly prepared in Paris at the famous Les Halles marketplace. If you’re willing to try an onion soup that doesn’t use beef stock, give this recipe a try. It even fits most definitions of vegetarian food!

English-language cookbooks are fond of saying that onion soup was a favorite of locals stopping by the central Paris open markets after the theater or cabaret. As famous as the onion soup of Les Halles may have been, I have not been able to find a recipe purporting to be actually from this famous marketplace. In Saveur Cooks Authentic French, the editors can’t seem to bring themselves to use a recipe from France for soupe à l’oignon gratinée so they print one that they have created from “combined” sources. If you think onion soup has to be made with beef broth, it’s a good one to try.

After looking at a large number of onion soup recipes, I’ve concluded that it is possible to create a generic recipe for soupe à l’oignon. There may be lots of recipes out there, but the differences are slight.

©2001, 2014 Peter Hertzmann. All rights reserved.

gratinée lyonnaise
75 g (5 T)
unsalted butter
350 g (34 lb)
peeled, halved, and sliced yellow onions
1 T
all‑purpose flour
114 l (514 c)
water
salt and freshly ground black pepper
1 small
bouquet garni
100 g (312 oz)
thinly sliced baguette
125 g (412 oz)
grated Gruyère cheese
1 large
egg yolk
1 T
Madeira wine
1. Preheat oven to 230 °C (445 °F).
2. Melt butter over medium heat in a large saucepan. Add onions and sweat unless soft and golden. Sprinkle the flour over the onions. Mix well and cook a bit. Add the water, salt, pepper, and bouquet garni. Bring to a boil, reduce heat, and simmer for about 30 minutes.
3. In the meantime, dry baguette slices in the oven. Set aside until needed.
4. Discard the bouquet garni and puree the rest of the onion mixture in a food processor. Strain the puree into a sauce pan. Use a rubber spatula to force the solids through the strainer. Keep warm.
5. Line the bottom of the soup bowls with alternating layers of bread and half the grated cheese. Gently divide the soup among the bowls. Divide the remaining cheese among the bowls. Place the bowls in the oven until the cheese is melted.
6. Combine the egg yolk and the wine. Divide the mixture over the top of the melted cheese and return to the oven until the mixture cooks.
Yield: 2 servings.
Ref: Paul Bocuse, La Cuisine du Marché, 1998, page 73.

©2001, 2014 Peter Hertzmann. All rights reserved.

soupe à l’oignon gratinée
1 T
olive oil
2 T
unsalted butter
340 g (34 lb)
peeled, halved, and sliced yellow onion
thick slices
baguette, as required, to form a single layer in each soup bowl
pinch
granulated sugar
1 t
all‑purpose flour
700 ml (3 c)
chicken stock
120 ml (12 c)
dry white wine
salt and freshly ground black pepper
100 g (312 oz)
grated Gruyère cheese
1. Preheat oven to 230 °C (445 °F).
2. Heat the oil and half the butter in a saucepan over low heat. Add the onions, cover, and cook for about 20 minutes until soft and translucent. Stir frequently.
3. Butter the bread slices with the remaining butter and bake until toasted. Remove and set aside.
4. Remove the cover, increase to medium‑high, add sugar, and stir continuously until the onions turn golden. Reduce heat, add flour, and cook a minute or two more. Add stock and wine, increase heat to high, and bring soup to a boil. Reduce heat and simmer for 30 minutes. Adjust seasoning.
5. Divide the bread slices among the serving bowls in a single layer. Gently divide the soup among the bowls. Sprinkle half the cheese over each bowl. Melt and brown the cheese under a broiler.
Note: The original recipe called for beef stock instead of chicken stock.
Yield: 2 servings.
Ref: Dorothy Kalins, Saveur Cooks Authentic French, 1999, page 55.

©2001, 2014 Peter Hertzmann. All rights reserved.