juice of 1/2 limes

Lime juice is the acidic liquid extracted from limes (Citrus aurantifolia, Citrus latifolia, or Citrus limettioides), small citrus fruits native to Southeast Asia and now cultivated worldwide. The juice comprises approximately 5-8% citric acid by weight, giving it a tart, sharp flavor profile and bright yellow-green color. Key varieties include Persian limes (larger, seedless, widely available commercially) and key limes (smaller, more acidic, traditional to Caribbean and Mexican cuisines). Fresh-squeezed juice offers superior flavor and vitamin retention compared to bottled or concentrated versions.

Lime juice is fundamental to many global cuisines, particularly Latin American, Southeast Asian, and Caribbean cooking. It is essential in beverages such as margaritas, daiquiris, and agua fresca, and serves as a key acidifying agent in ceviches, ceviche, and other raw seafood preparations. The juice is used to brighten Asian curries, tom yum soups, and Vietnamese pho; to add tang to salsas, guacamole, and marinades; and to finish dishes with acidity just before service. Its antimicrobial and denaturing properties make it valuable for "cooking" raw proteins, while its citric acid enhances flavor perception and preserves color in fresh produce.