
Caramelized onions are already a culinary delight, but a quick marinade can take them to the next level. While they’re perfect as is, a marinade adds an extra layer of flavor and texture.
Marinades not only amplify taste but also act as a preliminary cooking stage. Ingredients like salt, sugar, and acid break down cell walls, tenderizing food and reducing moisture. This process works wonders on onions, speeding up softening and browning. A touch of sugar in the marinade accelerates caramelization, though it requires closer monitoring. The result? Perfectly caramelized onions in less time.
Marinating onions offers endless possibilities, with no wrong approach. Leftover vinaigrette works beautifully, as does a mix of soy sauce, mirin, and miso. Pickling liquid also serves as an excellent marinade, whether you stick to tradition, add some heat, or use a beer-based brine. Pickled onions caramelize swiftly, transforming into a rich, jam-like consistency with minimal effort.
Creating a full marinade isn’t necessary—just a sprinkle of salt, sugar, and (if desired) oil can transform the texture and taste of onions. While I no longer cook meat at home, my go-to technique for stews and braises was dry brining meat overnight with heaps of sliced onions, salt, brown sugar, and crushed garlic. This process essentially candies the onions in meat juices and brine, resulting in an unbelievably tender and flavorful outcome.
