juice of one lemon

Lemon juice is the acidic liquid extracted from lemons (Citrus limon), a small yellow citrus fruit native to Southeast Asia. The juice comprises approximately 4-6% citric acid by weight, which gives it its characteristic tart flavor and preservative properties. Lemons are typically harvested when fully ripe and develop their bright yellow color; the juice can be extracted by hand-squeezing, mechanical pressing, or using specialized citrus juicers. Fresh lemon juice is prized for its bright, clean acidity and subtle floral notes, while bottled and concentrated varieties offer convenience at the expense of aromatics and complexity.

Lemon juice functions as both a flavoring agent and functional ingredient across global cuisines. It is essential in Mediterranean, Middle Eastern, and Asian cooking, used to brighten dishes, balance richness, and enhance other flavors without adding sodium. Common applications include marinades for fish and poultry, dressings for salads and vegetables, finishing acid for soups and sauces, and a key component in beverages from cocktails to agua fresca. Lemon juice also prevents oxidation in cut fruits and vegetables and is used to denature proteins in preparations like ceviche.