Vegetarian French Onion Soup

In honor of Bastille Day and Sheldon Brown’s birthday, I present the following recipe for vegetarian (or easily vegan) French Onion Soup. I suggest drinking it with real Champagne, and a sip of Cognac.

Serves 5-ish.

Tools

  • Large, flat-bottomed pan or pot with lid or electric griddle
  • V-slicer or mandolin (not necessary, but handy)
  • Knife
  • Cutting board
  • Wisk
  • Oven-safe soup crocks

    Ingredients

  • 10 medium sized onions, vidalias work nicely
  • 4 T. butter
  • Kosher salt (table salt OK)
  • 2 c. dry champagne
  • 32 oz. vegetable stock, low salt version if available
  • 10 oz. apple cider, unfiltered
  • 1/4 t. Marmite or Vegemite
  • Thyme
  • Bay
  • Parsley
  • 1 loaf Country-style bread
  • Black pepper
  • Cognac or VSOP Brandy
  • 8 oz. Gruyere, Emmenthaler or other swiss-style cheese

    Procedure

    To begin, we prepare the onions, the heart and soul of the soup. Slice each onion in half, and cut off the root end and the stem end. Slice in a longitude fashion (north/south, if the onion were the earth), which produces little ‘crescent moons’. This slicing style is called Lyonnaise, for some reason, probably relating to the French city of Lyons.

    If you have a V-slicer or mandolin (no, not the instrument, the cooking tool), you can just blast the onions into tiny slices like a machine, and be done in a few minutes. This is my preferred method.

    Once you have sliced all the onions, wipe the tears from your eyes, and begin heating your pot. The pot or pan should be large enough to hold all the onions, have a large bottom, and be equipped with some sort of lid. A large electric griddle would actually work nicely. Set the stove to medium/low, or your griddle to 300 degrees.

    Toss the butter into the pan, and allow it to melt and bubble for a minute. When it smells like nuts, it’s ready. Add the onions to the pan in layers. Each time you add a half inch layer, sprinkle a pinch of salt over the onions, and lay down another layer. When all the onions are added, cover the pan, and wait.

    It is key to note that we are not sauteing these onions, we are sweating them. The salt will pull moisture from them, and they will begin to stew in their own juices. If you here active ‘sizzling’ you should lower the heat. You just want a gentle bubbling sound.

    Wait at least 20-30 minutes, and then give the onions a bit of a stir. Don’t touch them before then! If you notice they are beginning to burn, then rejoice, because that is what you want! Let them burn, let them turn a rich mahogany color. You are caramelizing the sugars in a series of chemical reactions known as Malliard reactions that convert a few simple sugars into literally hundreds of flavorful compounds.

    Stir every 5 to 10 minutes until your onions are a good mahogany color. They should smell fantastic. Once the onions are sitting in a pool of their own liquid, feel free to remove the lid, and bring the heat up a bit. This will allow some of the water to boil off, and get that delicious burning action going.

    When your onions are a good dark color, after perhaps an hour, it is time to deglaze the pan. You’ll notice that a bunch of gunk is stuck to the bottom of the pan. This gunk is precious. Crank the heat up to maximum, and add 2 cups of the driest white wine or champagne you’ve got. Let it cook down until it takes on a syrupy consistency. Pour yourself a glass of said wine. One thing a chef never does is let wine go to waste.

    At this point, add the 32 oz. of vegetable stock, the 10 oz. of unfiltered apple juice, and the 1/4 teaspoon of Marmite or Vegemite (we’ll get into the why later).

    Return to a simmer, and lower heat to medium/low. Tie the thyme, bay and parsley together with a piece of string (a bouquet garni), and toss it in. These herbs are delicious, but tough to eat, so we’ll remove them later.

    Simmer the mixture for 15 to 20 minutes. In the meantime, cut your crusty bread into rounds that will fit into your oven safe soup bowls. I like to use the bowls as big cookie cutters to help shape the bread. Fire up the broiler in your oven to maximum broil, and toast the pieces of bread on both sides, until golden brown and delicious (GB & D). This is also a good time to grate up some of your swiss cheese, enough to cover the surface of each piece of bread with a full layer.

    When the soup has simmered for 15-20 minutes, give it a taste. It will probably need a little salt, and a few good cranks of black pepper. Then, with a flourish, toss in a good splash of Cognac or VSOP Brandy. Don’t measure it out, just splash some out of the bottle, like the saucy chef you are. Stir it in, and let it cook for another moment, to burn off a little of the alcohol. However, realize that the claim that the alcohol ‘cooks out’ is a lie. Some of the alcohol will indeed cook out, but it is actually impossible to remove it all. If that bothers you, skip the Cognac, it’ll still be good. You could also use a little sparkling grape juice for the wine in the beginning, though it’ll be a bit on the sweet side.

    Ladle the soup into your bowls, avoiding the bouquet of herbs, and place a crouton (that’s the now French word for those toasts you made) onto each bowl, floating gently on the soup. Cover with a modest layer of cheese, and then back into the hot broiler with them! It will only take a moment for the cheese to become bubbly and melted. Pull them out (carefully, they are freakishly hot), add spoons, and then enjoy! The goal, when eating them, is to get a little piece of cheese and crouton in with every bite. If you get to the end and have too much soup, or too much crouton, prepare yourself another bowl, and get it right this time!

    I recommend more of that dry wine or champagne you used for cooking. Open another bottle if you must.

    Notes

    Here are some notes on ingredients that I find helpful. First, the onions. 10 onions is a lot, and variation in size can make a big difference. I urge you to not worry about it that much. Unless your onions seem oddly tiny, 10 is a good number. When in doubt, add another onion! I’ve used some real monsters before that only took 6. Vidalia onions are best, because they come from a region of Georgia that has a very specific soil chemistry with very little sulfur, meaning the onions have as much as twice the sugar content of other onions, and less ‘heat’ because of the decreased sulfur content. Sometimes I mix things up a bit and use a few red onions in the mix.

    Butter can be exchanged for olive oil if you are vegan, but if you eat dairy, I urge you to use the butter, it really does help a lot, and even though it looks like a lot, spread over an entire batch, it’s not much at all.

    The wine you use should be dry. Too sweet and your dish will taste like maple syrup. Good, but a bit oppressive for an entire meal.

    The quality of your vegetable stock will play a huge role on the quality of your soup. Get the best you can! Many canned stocks are very salty, so either get the low-salt variety, or the kind in the cartons, which is often less salty. I like Trader Joe’s brand. If you make your own stock, or know someone who does, get that, it’ll rock.

    The Vegemite/Marmite is an odd ingredient, but its one of the linchpins of this whole recipe! French Onion soup traditionally uses beef consomme, which is a beef stock that is so thick and rich that it actually will solidify at room temperature. It takes a long time to make, and is very concentrated. Unfortunately, its flavor is nearly impossible to replicate.

    However, if we understand the recipe, we can understand how to replace it. The onions have sweetness, the wine tartness, the herbs and cognac add bitterness, and the salt adds saltiness. However, those are not the only four tastes! The fifth, and least understood taste, is known as Umami, or Savory. It is technically the flavor of free amino acids, but you know it as that distinctive ‘goodness’ associated with mushrooms, meats, aged sauces like soy sauce, and aged cheeses like parmesan. It is also the flavor that MSG aims to add to food. Beef consomme is a rich and powerful source of Umami, and simply leaving it out will damage your recipe’s balance. To replace it, we must find another source.

    Vegemite and Marmite are two brands of a hydrolyzed yeast product derived from the sludge of dead yeast left at the bottom of beer brewing containers. Through some odd sorcery and technologies, this sludge is concentrated into a dark, vile smelling paste. This paste is spread incredibly thinly on pieces of toast, and enjoyed by the British and Australians. They love it because hydrolyzed yeast product is nearly pure amino acid, the very Umami we seek!

    The addition of this Umami to our soup will complete the delicate balance that is the dish, and allow us a vegetarian recipe that doesn’t emulate beef consomme, per say, but holds its own against it as a unique, but balanced creation.

    Oh, and just to dispel a common misconception, yeast is not an animal, it is a fungus (like mushrooms), hence it is acceptable for all vegan and vegetarian diets.

    As a final note, your cheese matters a lot as well. Store Brand swiss will not serve you well. I recommend a good Gruyere, or Emmenthaler cheese, both available in your finer grocer-mart’s cheese case. Whole Foods and Trader Joe’s both have good cheese counters. Again, if you are vegan, leave out the cheese. You could sample some of the better soy based cheeses, but I’m not very familiar with them, so it would be an experiment on your part.

    Enjoy!

3 Responses to “Vegetarian French Onion Soup”

  1. on 27 Dec 2006 at 6:21 pm keeneye

    An AMAZING recipe for this awesome soup that I loved as a kid. Having been vegetarian for some time now, I missed this winter staple.

    I love you.

  2. on 25 Apr 2007 at 8:48 am kcsandy

    I have been making vegetarian french onion soup for a long time. I have always used a home-made mushroom stock. Your explanation of the role of savory was very interesting. I think I’ll keep using the mushroom stock, but it’s good to know there’s an alternative. I must say, I’m a little afraid to add the apple cider, and wonder whether it will make the soup too sweet, and what that adds to the taste. Any comments?

  3. on 25 Nov 2007 at 11:00 am Alison

    Needs twice the quantity of marmite.

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