Method
Method
- Melt butter with olive oil in a large heavy pot over medium heat. Add the sliced onions, sugar, and salt. Stir to coat.
- Cook the onions slowly, stirring every 5-7 minutes. After about 20 minutes they'll be soft and translucent. After 45-60 minutes they'll be deeply golden brown and jam-like. Don't rush this step.
- Add minced garlic. Stir 1 minute.
- Pour in the wine. Scrape the bottom of the pot to lift any caramelised bits. Cook 2-3 minutes until the wine reduces.
- Add hot beef stock, thyme, bay leaf, and Worcestershire. Simmer uncovered 20 minutes.
- Taste and adjust salt and pepper. Fish out the herbs.
- Preheat your grill (broiler) on high. Ladle soup into oven-safe bowls. Float a slice of toasted baguette on top of each. Cover generously with grated Gruyere.
- Place bowls on a tray under the grill. Grill 2-3 minutes until the cheese is bubbling and golden brown. Serve immediately while everything is bubbling.
Nutrition
Notes
The onion stage is everything. Don't try to caramelise onions at high heat. They burn before they brown. Low and slow, 45-60 minutes minimum, stirring occasionally. They should reduce to about a third of their original volume and be the colour of dark caramel.
Gruyere alternatives. Comté is even better but harder to find. A good Swiss or a sharp cheddar mixed with parmesan also works.
Bowls. Ovenproof. The grill step requires it. Standard ceramic mugs or restaurant-grade onion soup bowls both work.