Brine preservation ancient across cultures; equilibrium brining as a precision technique popularised by Nathan Myhrvold and the Modernist Cuisine team in the 2010s
Wet brining is the immersion of meat, poultry, or fish in a salt-water solution to season it internally, improve moisture retention during cooking, and in some applications deliver aromatics throughout the protein. The science involves osmosis and diffusion: initially, water moves out of the meat into the higher-salinity brine; then, as salt diffuses inward, water follows, resulting in a net increase in moisture content and internal salt equilibration. Equilibrium brining is the precision approach that has replaced traditional 'percent by volume' brining for serious cooks. In traditional brining, excess salt was used and the brine time strictly controlled to avoid over-salting. Equilibrium brining instead calculates the exact desired salt percentage of the final product (typically 0.7–1.5% for poultry and pork, 1–2% for fish), adds that same percentage to the total weight of the meat plus water combined, and submerges the food. Because the brine and meat ultimately reach the same salt concentration, the product cannot be over-salted regardless of extended brining time — the equilibrium is the limit. Example calculation: 1 kg chicken breast + 1 kg water = 2 kg total. At 1% salt: 20g salt. Dissolve 20g salt in 1 kg water, submerge the chicken, and refrigerate 8–24 hours. The chicken will reach exactly 1% internal salt concentration. Beyond salt, wet brines can carry dissolved aromatics — bay leaves, peppercorns, citrus zest, herbs, sugar — though the amount of flavour penetration from aromatics is modest compared to salt, which moves actively by osmosis. Sugar at 25–50% of salt weight adds subtle sweetness and improves Maillard browning during subsequent searing. Brine temperatures must remain below 4°C at all times. Warm brining accelerates ion transfer but creates dangerous bacterial growth conditions and must only be used with immediate cooking.
Delivers even internal seasoning throughout — particularly transformative for lean proteins prone to dryness, producing juicier results after cooking
Equilibrium brining targets a fixed final salt percentage — the protein cannot over-salt beyond the equilibrium point Calculate salt against total system weight (meat + water), not meat or water alone Typical target salt percentages: poultry 0.7–1.0%, pork 1.0–1.5%, fish 1.0–2.0%, depending on desired saltiness Always brine at refrigerator temperature (0–4°C) — warm brining is a bacterial risk Sugar at 25–50% of salt weight improves flavour balance and accelerates Maillard browning on the surface Equilibrium brining can be used with vacuum sealing for more rapid salt penetration with less liquid
Vacuum-seal meat with only the required amount of brine to eliminate air and maximise surface contact, reducing equilibration time by 30–50% For turkey and large birds, use a garbage bag inside a cooler with ice packs to maintain food-safe temperatures without occupying refrigerator space To test equilibration progress, weigh the meat before and during brining — weight gain slows as equilibrium approaches Dry-brine (salt applied directly to surface, no water) achieves similar internal seasoning with better skin drying for roasting After brining and drying, a 1–4 hour uncovered rest in the refrigerator further desiccates the surface for superior crust development
Using traditional excess-salt brines without careful timing, resulting in over-salted, rubbery protein Brining at room temperature to speed the process — this is a food safety hazard for all brining times beyond 30 minutes Adding aromatics expecting dramatic flavour penetration — only salt and sugar move efficiently through osmosis; aromatics are surface-level Not accounting for salt already present in injected or enhanced commercial poultry when calculating brine ratios Forgetting to pat the surface dry after brining — surface moisture inhibits Maillard browning on the exterior