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Printed at the current scale: 16 servings · Metric · A4 or Letter, one page where it fits

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French Onion Soup

16 servings

Soup

  • 2720 gyellow onions, thinly sliced
  • 89 mlunsalted butter
  • 10 to 20 mlfine sea salt
  • 120 mldry sherry, vermouth or white wine
  • 2 leavesbay leaf or a few sprigs of thyme
  • 3.79 lbeef stock, or chicken or mushroom stock, the more robust the better
  • freshly ground black pepper, to taste

Toasts and Gratin

  • 16 slicesslices of country bread or baguette, cut 2 to 2.5 cm thick, one per bowl
  • 2 clovesgarlic, peeled
  • 945 mlGruyère, Comté, or Gruyère mixed with Parmesan, grated, about a quarter cup per bowl
  1. Soup Melt 89 ml unsalted butter in the pot over medium heat. Add 2720 g yellow onions, toss to coat them in butter and cover. Turn the heat down to medium-low and leave them to steep, untouched, for 15 min.
  2. Uncover, raise the heat slightly and stir in 10 to 20 ml fine sea salt. Cook, stirring every five minutes or so, for 40 to 90 min longer, until the onions are an even, deep golden brown. Turn the heat down if they colour too fast.
  3. Add 120 ml dry sherry, vermouth or white wine, if using, and scrape up any onion stuck to the pot. Cook until the liquid disappears. 1 min to 3 min
  4. Add 3.79 l beef stock, or chicken or mushroom stock, 2 leaves bay leaf or a few sprigs of thyme and plenty of freshly ground black pepper. Bring to a simmer, partly cover and simmer for 15 min to 20 min. Taste for salt and fish out the bay leaf or thyme.
  5. Toasts and Gratin While the soup simmers, heat the broiler, or heat the oven as hot as it will go if you have no broiler. 260 °C
  6. Unless 16 slices slices of country bread or baguette is already stale, toast the slices lightly until firm. Rub each one lightly with the cut 2 cloves garlic.
  7. Set the bowls on a foil-lined baking sheet and ladle in the hot soup. Fit a toast on top of each, trimming it if needed, and cover with 945 ml Gruyère, Comté, or Gruyère mixed with Parmesan.
  8. Slide the sheet under the broiler until the cheese is melted and browned at the edges. Serve straight away; the soup stays hot for a good 10 min. 260 °C
  • Safety: Large batch: cool quickly in shallow containers or an ice bath, to below 5 °C within 6 hours, before refrigerating. (USDA FSIS)