A cocktail onion is usually a small onion pickled in a solution oh water with a high amount of salt in it (brining) with small amounts of turmeric and paprika. These onions are naturally sweet, which makes them an excellent pairing with many cocktails. Other sweet onions such as the crystal wax, also known as white Bermuda, are also used sometimes. In many cases, white varieties of these sweet onions are used, since many consumers expect cocktail onions to be white. However, yellow or red sweet onions can be used as too.
Generally, the onion retains a slightly crunchy texture through the brining process, which can add a different taste to the drinking experience. Since the cocktail onion is made from a sweet onion, it is unlikely to upset the digestion with a sulfurous or eye-watering taste, although some cultures use more pungent onions as cocktail garnishes.
Use as a garnish
While not as widely used as more common garnishes such as olives or lemon twists, the cocktail onion is the signature garnish for the drink, which consists of a standard Martini garnished with a cocktail onion instead of the standard olive.
• 1/2 cup white vinegar
• 1 cup dry vermouth
• 3 tablespoons sugar
• 1 tablespoon coarse salt
• 1 pound frozen pearl onions
• 1 teaspoon coriander seeds
• 1 teaspoon black peppercorns
Take vinegar, vermouth, sugar, and salt to a boil. Put pearl onions, coriander seeds, and black peppercorns into a glass jar. Pour in liquid; let cool completely. Cover; refrigerate at least 1 week before using.