lemon juice to taste

Lemon juice is the acidic liquid extracted from the fruit of Citrus limon, a small evergreen tree native to Asia. The juice comprises approximately 5-6% citric acid, which gives it its characteristic tartness and pH of around 2.0-2.6. Freshly squeezed juice contains volatile compounds including limonene and citral that provide bright, aromatic qualities. Commercial lemon juice is available both fresh and preserved (bottled or concentrated), with variations in acidity and flavor intensity depending on the source fruit variety and processing method.

The primary acid in lemon juice—citric acid—serves multiple functions in cooking: it brightens flavors, prevents oxidation, aids in food preservation, and can modify protein structure in dishes like ceviche. The juice is nearly colorless to pale yellow, depending on fruit ripeness and variety.

Lemon juice functions as a finishing acid and flavor amplifier across virtually all culinary traditions. It is used to brighten savory dishes, balance richness in fats and proteins, and enhance the natural flavors of vegetables, fish, and poultry. In vinaigrettes and marinades, it serves as an acidic component; in baking, it reacts with baking soda to create lift; in beverages, it provides tartness and complexity. Mediterranean, Middle Eastern, and Asian cuisines rely heavily on lemon juice. It is equally essential in French cuisine (gastrique, beurre blanc) and modern cooking where acid balance is fundamental to dish composition.