limes or ½ cup vinegar
Limes are an excellent source of vitamin C and contain small amounts of B vitamins and minerals; they are low in calories and provide antioxidants including flavonoids.
About
Limes are small, round to oval citrus fruits (Citrus aurantifolia, Citrus latifolia, and related species) native to tropical regions, likely originating in Southeast Asia. The fruit has a thin, green-skinned exterior that yellows when overripe, with acidic, pale green flesh containing numerous small seeds. Limes are characterized by their sharp, tart flavor profile with subtle floral and slightly bitter notes, distinguishing them from the milder acidity of lemons. The Persian lime (Citrus latifolia) and Key lime (Citrus aurantifolia) are the most commercially significant varieties, with Persian limes being larger and seedless, while Key limes are smaller and more intensely flavored.
Culinary Uses
Limes function as both a flavoring agent and acidulant across global cuisines. The juice is essential in Latin American, Southeast Asian, and Caribbean cooking, used in marinades (particularly for ceviche), beverages (margaritas, daiquiris, beer), dressings, and hot sauces. In Thai, Vietnamese, and Indian cuisines, lime juice brightens curries, soups, and rice dishes. The zest provides aromatic oils for garnishes, baking, and spice blends. Whole limes are sometimes pickled or preserved, and the leaves of the kaffir lime (Citrus hystrix) are prized in Southeast Asian cooking for their distinctive citrus aroma.