shot lime juice

Lime juice is the freshly squeezed or commercially processed liquid extracted from Persian limes (Citrus latifolia) or Key limes (Citrus aurantifolia), small citrus fruits native to Southeast Asia and the Caribbean respectively. The juice is characteristically tart and acidic, with a pH typically between 2.0 and 2.4, and contains approximately 6–7% citric acid by volume. Persian limes are larger and more commonly found in supermarkets, while smaller, more aromatic Key limes are prized in Caribbean and Latin American cuisines. Fresh lime juice is bright green to pale yellow, depending on the fruit's ripeness and variety, with a complex flavor profile combining sharp acidity with subtle floral and herbaceous notes.

Fresh lime juice should be distinguished from bottled or concentrated varieties, which may contain preservatives and lack the volatile aromatic compounds present in freshly squeezed juice. The juice oxidizes rapidly upon exposure to air and light, losing both flavor and nutritional potency within hours.

Lime juice serves as a foundational acid in global cuisines, essential for balance, brightness, and preservation. In Mexican and Latin American cooking, it is the primary souring agent in ceviches, salsas, marinades, and the classic margarita cocktail. Southeast Asian cuisines employ it extensively in Thai curries, Vietnamese pho broths, and Philippine adobos, where its acidity cuts through richness and enhances aromatic compounds. Caribbean cocktails, from mojitos to daiquiris, rely on lime juice for characteristic tartness. Beyond beverages, lime juice is used as an acidulant in ceviche preparations (where its acidity "cooks" fish), in pickling brines, as a tenderizing marinade component, and as a finishing agent for soups and grilled proteins. A squeeze of fresh lime brightens almost any savory dish without adding salt.