How Do You Get That Deep Flavor in French Onion Soup?

How Do You Get That Deep Flavor in French Onion Soup?

Picture this: a chilly evening, a cozy bistro, and a steaming crock of French Onion Soup arrives at your table. The cheese pulls in long, glorious strings, the crouton is perfectly saturated with savory broth, and the first spoonful reveals a flavor so deep and complex it feels like a warm hug. Now, picture your attempt at home: a little thin, a bit watery, the onions tasting more boiled than beautiful.