Soaking or injecting food with a salt-water solution to add flavour and moisture and, at higher salt levels, to help preserve it.
Soaking or injecting food with a salt-water solution to add flavour and moisture and, at higher salt levels, to help preserve it. Brining is the process of soaking or injecting food, usually meat, poultry or vegetables, in a solution of salt and water, sometimes with added sugar, spices or curing agents. At lower salt concentrations, brining is mainly used to add flavour and help food retain moisture during cooking, as with brined poultry. At higher salt concentrations, brining becomes a preservation method, because the salt lowers water activity and creates conditions that many spoilage and harmful bacteria struggle to grow in. As a preservation method, brining works in a similar way to dry curing, using salt to draw water out of the food and out of bacteria. Strong brines are used in making products such as corned beef, olives and some fermented vegetables, where the salt concentration and, in ferments, the resulting acidity control harmful bacteria. Where brines include nitrite or nitrate curing salts, those additives are regulated under the Australia New Zealand Food Standards Code and help control pathogens such as Clostridium botulinum. For an Australian business, a flavour brine used before cooking is a simple step, but the brined food is still potentially hazardous and must be kept chilled and cooked properly. Preservation brines are more of a controlled process, where the salt concentration, temperature and time need to be right, and producers of brined or fermented products often follow tested recipes and keep records. Businesses using brine should keep it cold and not reuse brine in ways that could spread contamination, for example between raw and cooked products. For vegetable ferments in brine, keeping the food fully submerged and using enough salt encourages the right bacteria. Where curing salts are added to a brine, businesses must stay within the additive limits set in the Food Standards Code and label them correctly. A butcher makes corned beef by submerging brisket in a strong salt brine containing a permitted nitrite curing salt, kept in the cool room for several days so the salt penetrates the meat evenly. The brine strength and time follow a tested recipe, and batch details are recorded so the curing effect is consistent and the nitrite level stays within legal limits.
Frequently asked questions
What is brining?
Soaking or injecting food with a salt-water solution to add flavour and moisture and, at higher salt concentrations, to help preserve it.
How does brining preserve food?
At higher salt levels, brine lowers the food's water activity and draws water from bacteria, creating conditions in which many spoilage and harmful bacteria struggle to grow.
Is brined food safe to leave at room temperature?
Flavour-brined food is still potentially hazardous and should be kept chilled. Only properly preserved strong-brine or fermented products may be more stable, depending on the recipe.
How is brining different from dry curing?
Brining uses a salt-water solution, while dry curing applies salt directly to the surface. Both rely on salt to lower water activity and control bacterial growth.
Can curing salts be added to a brine?
Yes. Nitrite or nitrate curing salts can be used within the limits set in the Food Standards Code and help control pathogens such as Clostridium botulinum. They must be labelled.
