Salt in Cheesemaking: Why Cheese Is Salted

Makers add it three ways, mixed into the curd, rubbed on the surface, or soaked in brine, and the choice largely decides what kind of cheese you get.

Almost every cheese is salted at some point. The cheeses that are not, or barely, are the fresh ones eaten within days. The rest depend on salt at the moment it counts, which is soon after the curd is made.

Why salt in cheesemaking matters

Salt in cheesemaking matters because it performs four separate jobs at once. The Cheese Science Toolkit lists them: regulating microbial growth, encouraging moisture loss, altering texture, and enhancing flavor.

Each job shows up in a finished cheese. A drier curd keeps longer. A salty cheese resists spoilage better than a bland one. And a dry, firm paste behaves differently in the pan than a moist one, which is part of why feta crumbles and fresh mozzarella stretches.

Salt for flavor and balance in cheese

Salt for flavor in cheese does more than taste salty. According to the Cheese Science Toolkit, salt helps enhance other flavors present or cover up unpleasant ones. Too little leaves cheese flat. Too much overwhelms it.

Salt level is part of a cheese's identity. Pecorino Romano is sold on being salty, and feta is salty by design: the feta page puts it at about 2.9 percent salt, from USDA data. If you watch sodium, the low-sodium cheese guide lists lower options.

Salt, moisture and rind

Salt, moisture and rind are linked, because salt draws out whey and the surface of a salted wheel changes as it loses water. The Cheese Science Toolkit notes that brine lets salt penetrate gradually and that rind develops in the process.

A study of halloumi shows the effect in numbers. In that study of salting methods, the denser the brine, the higher the weight loss of the cheese. Moisture in cheeses brined at 13 percent fell from 48.89 percent (3 hours at 4°C) to 45.53 percent (48 hours at 20°C). Dry-salted cheeses came in lower again, at 42.62 to 46.2 percent moisture.

Dry salting vs brining

Dry salting vs brining is the main choice a cheesemaker faces, and the Cheese Science Toolkit describes three methods.

Dry salting the curd takes advantage of the large surface area of cut curd, so salt absorbs quickly and whey is expelled. Cheddar is the classic example. Brining is gentler and slower: salt moves in gradually while the wheel's rind forms, which suits larger or softer cheeses. A dry rub suits only smaller wheels, according to the toolkit.

How much salt goes in

How much salt goes in depends on the cheese, and the numbers worth quoting come from studies, not rules of thumb. In the halloumi study, dry-salted cheeses held 1.51 to 1.61 percent salt, against 0.10 percent in unsalted controls. Brined at 13 percent, cheeses reached 3.68 percent salt after 3 hours at 4°C and 4.97 percent after 48 hours at 20°C.

Two points follow. Salt goes in fastest during the first hours of brining and slows after about 24 hours, the study found, so time in the brine is a control. And warmer brine moves salt faster, and the study found cheeses brined at 20°C came out harder than those at 4°C.

At home, New Mexico State University Extension's cheesemaking guide gives recipe amounts, not a universal figure: for feta, 8 tablespoons of salt per gallon of whey to make a whey brine, and for neufchâtel, 1 to 3 teaspoons (4.5 to 14 g) of salt added in increments. Follow the recipe for your cheese, since the right amount varies. The make feta page shows a full process.

Salt in cheese brine and storage

Salt in cheese brine is also how some cheeses are stored. Feta is cured at least two months in brine of about 7 percent salt, according to the feta page, and Utah State researchers held feta in brines of 6.5 to 9.5 percent salt in the work that page cites. Halloumi is likewise kept in brine.

Salt mistakes in cheesemaking

The common salt mistake in cheesemaking is treating all salt, all curd and all timing the same. Salting too early or late changes how much whey leaves and how the cheese develops. The Cheese Science Toolkit places dry salting after the curd is cooked and drained, so adding it earlier in that sequence is a change to the recipe, not a shortcut.

Another mistake is measuring by feel. Because the salt a cheese takes up depends on brine strength, time and temperature, as the halloumi data show, a recipe's brine strength and soak time should be followed as written. Measuring salt by weight is more repeatable than by the spoon, which is a general practice, not a figure from a source.

Last, home makers sometimes skip salt thinking it is only flavor. A cheese with too little salt can taste flat and may keep less well, and one that is soaked too long turns salty and hard. For problems with texture, see troubleshooting.

Questions about salt in cheesemaking

These questions about salt in cheesemaking come up often with first batches.

Why is salt added to cheese?

Salt is added to cheese to control microbes, draw out whey, change texture and add flavor, as the Cheese Science Toolkit lists.

What is the difference between dry salting and brining cheese?

Dry salting cheese means mixing or rubbing salt on the curd or wheel, while brining means soaking the whole cheese in salt solution so salt moves in gradually.

Does salt preserve cheese?

Salt helps preserve cheese by holding back some microbes and removing moisture. The toolkit says it acts as an antimicrobial only to some degree, so it works alongside acidity and storage.

Can you make cheese without salt?

You can make cheese without salt, since fresh cheeses are often lightly salted or unsalted, but it will taste flat and the texture changes. Salt is a normal step for most cheeses.

What kind of salt works for cheese?

The salt for cheese should be plain, without additives. That is guidance, not a sourced rule, so check your recipe.

Using salt in cheesemaking

Using salt in cheesemaking is mostly following the recipe: salt at the stage it says, in the amount it says. A beginner can start with a ricotta or paneer, where salt is mostly flavor, then try a brined cheese. The rennet guide explains the step that comes before salting.