lime juice (freshly squeezed is best

Lime juice is the liquid extract from the fruit of Citrus aurantifolia (Persian lime) or Citrus latifolia (Key lime), citrus fruits native to Southeast Asia and now cultivated globally in tropical and subtropical regions. The juice contains 5-6% citric acid and essential oils that provide its characteristic tart, slightly herbaceous flavor. Fresh lime juice exhibits a vibrant acidic profile with subtle floral and aromatic notes distinct from other citrus juices. The color ranges from pale yellow-green to bright green depending on fruit ripeness, with freshly squeezed juice containing suspended pulp and oils that deteriorate rapidly upon exposure to air and light.

Lime juice functions as a primary acidifying agent and flavor enhancer across numerous cuisines, particularly Southeast Asian, Latin American, and Caribbean traditions. It is essential in drinks such as margaritas, daiquiris, and ceviche marinades, where its acidity denatures proteins and brightens flavors. The juice balances rich, fatty, or spicy dishes—a standard finishing element in Thai curries, Vietnamese pho, Mexican salsas, and Middle Eastern marinades. Fresh lime juice is preferred over bottled alternatives because it retains volatile aromatic compounds and enzymes; it is best added at the end of cooking to preserve its delicate flavor profile.