French · Soup
Quick French Onion Soup
Onion soup with hours of flavour in about an hour: onions are started in a dry caramel, given a pinch of alkali, and repeatedly deglazed so the browned crust keeps returning to the pot, then finished with sherry, stock and a gratinéed Gruyère crouton.

- YieldServes 4
- Hands-on45 min
- Total1 h 15 min
- Difficulty
Ingredients
- 1 tbspgranulated sugar
- 2.3 kgyellow onions, about 5 large, thinly sliced
- 30 gunsalted butter
- ¼ tspbaking powder
- 2 tspkosher salt, plus more to taste
- 60 mldry sherry
- 1.4 Llow-sodium chicken stock
- 2 leavesbay leaves
- 7 sprigsfresh thyme
- to tastefreshly ground black pepper
- 1baguette, sliced 1 cm thick and toasted
- 225 gGruyère or Swiss cheese, grated
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