Perfectly caramelized onions requires patience but pays off

Even if you’ve never prepared them yourself, the taste of caramelized onions is familiar to everyone—just think of French onion soup. Their signature richness and earthy complexity come from the labor-intensive (but rewarding) process of slowly caramelizing large quantities of sliced onions.
For your next grilled cheese, you can use yellow, white, or even red onions. Slice them thinly or dice them, depending on whether you prefer a bit of crunch or a smoother, spreadable consistency. Just like with French onion soup, the key to caramelizing onions is patience—cook them low and slow for up to an hour.
If you believe that a touch of tanginess, brininess, or fermentation enhances almost any dish, caramelized onions, while not exactly fitting that description, offer a similar zesty kick and vibrant flavor. To elevate them further, finish by deglazing the pan with a splash of sherry vinegar, as recommended by Gordon Ramsay. The sweet, earthy onions add a wealth of flavor and a gourmet touch to your sandwich without the need for expensive cheeses or fancy ingredients.
Static Media is the owner and operator of Chowhound and Tasting Table.
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