juice

juice of 1 lemon or 3 tablespoons lemon juice

ProduceFresh lemons are in season November to May in the Northern Hemisphere, though commercial cultivation makes them available year-round in most markets. Peak availability and highest acidity occur in winter months.

Lemon juice is rich in vitamin C (ascorbic acid) and contains citric acid, which aids mineral absorption and supports immune function. It is low in calories (approximately 11 per tablespoon) and contains small amounts of potassium and flavonoids.

About

Lemon juice is the liquid extracted from the fruit of Citrus limon, a small citrus tree native to South and Southeast Asia, now widely cultivated in Mediterranean regions and subtropical climates worldwide. The juice comprises approximately 5-8% citric acid by weight, along with ascorbic acid (vitamin C), sugars, and volatile aromatic compounds that contribute to its characteristic tart, bright flavor. Fresh lemon juice, expressed directly from the fruit, contains pulp and live enzymes, while bottled commercial versions are often pasteurized and may contain preservatives. The juice's high acidity (pH 2.0-3.0) makes it a crucial ingredient for flavor balancing, food preservation, and chemical reactions in cooking.

Culinary Uses

Lemon juice functions as both a flavor enhancer and functional ingredient across global cuisines. It brightens dishes through its acidity, prevents oxidation in fruits and vegetables, denatures proteins in ceviche and similar preparations, and acts as a tenderizing agent in marinades. Common uses include vinaigrettes, sauces (hollandaise, aioli), marinades, baking, beverages, and preservation. In Mediterranean cooking, it features prominently in Greek, Italian, and Middle Eastern dishes. Lemon juice also balances richness in fatty dishes, stabilizes emulsions, and activates the flavors of herbs and spices. A general ratio is 1 tablespoon per cup of sauce or dressing.

Forms & Preparations

  • Fresh-squeezed juice — Liquid extracted directly from fresh lemons, retaining pulp, enzymes, and maximum flavor; best used within hours of pressing for optimal flavor and nutritional content.
  • Bottled/commercial juice — Pasteurized and stabilized lemon juice, often with added preservatives; convenient but with reduced vitamin C and floral complexity compared to fresh.
  • Concentrate — Reduced lemon juice with water removed, requiring dilution before use; shelf-stable and suitable for beverages and cooking where volume is less critical.
  • Dried lemon powder — Dehydrated lemon juice reduced to powder form; used in dry rubs, spice blends, and where liquid addition is undesirable.
  • Preserved lemons (kimchi/confit) — Whole lemons fermented or cured with salt, developing complex umami and funky flavors; the juice and flesh are used as condiment in North African and Middle Eastern cuisines.