French onion soup
Soupe à l'oignon gratinée was the late-night meal of Les Halles, the old Paris food market, where porters and party-goers ate it at dawn; in Lyon, the city of onions, it's a winter bistro classic. Onions are cooked very slowly in butter until they turn a deep mahogany brown, then simmered in stock with a splash of wine and topped with toasted bread and melted cheese under the grill. The traditional soup uses beef stock; this version uses a rich vegetable stock and lets the deeply browned onions carry the flavour. Gruyère and Comté are made with animal rennet, so use a vegetarian alternative. Chef's tip: give the onions a full hour on a low heat; rushing them over a high heat is the common mistake and they burn before they sweeten.






