freshly-squeezed lemon juice

Lemon juice is the liquid extracted from ripe lemons (Citrus limon), acidic citrus fruits originating from Asia and now cultivated worldwide. The juice comprises approximately 5–8% citric acid by weight, along with malic acid, ascorbic acid (vitamin C), and trace minerals. Fresh-squeezed lemon juice retains the volatile aromatic compounds and the full spectrum of the fruit's acidic profile, making it distinct from bottled or concentrate forms that undergo pasteurization and may contain preservatives. The juice ranges in color from pale yellow to golden and delivers a sharp, bright acidity with subtle floral and sweet undertones characteristic of the particular lemon variety.

Freshly-squeezed juice differs significantly from commercial preparations in both flavor complexity and chemical composition, as exposure to air and light degrades ascorbic acid and aromatic volatiles over time.

Fresh lemon juice functions as a fundamental acid in cuisines worldwide, used to brighten dishes, balance richness, and prevent oxidation of delicate ingredients. It is essential in vinaigrettes, marinades, and emulsions such as hollandaise and mayonnaise; in Mediterranean and Middle Eastern cooking, it forms the base of dressings and sauces. The juice is integral to dishes ranging from ceviche to tabbouleh, and enhances fish, poultry, vegetables, and desserts. In beverage preparation, it serves as a base for lemonades and cocktails. Fresh lemon juice is preferred over bottled in applications where delicate flavor matters—such as finishing dishes, raw preparations, and highly acidic applications—as it provides cleaner acidity without chemical additives.