The role of salt in cheesemaking — why salt is essential, how it's added (dry-salting and brining), and what it does for flavor, texture, and preservation.
Salt is a small ingredient with a big role in cheesemaking — far more than just adding flavor. Here's a guide to the role of salt in cheesemaking.
More Than Just Flavor
Salt is an essential ingredient in nearly all cheeses, and it does far more than season. It contributes to flavor, but also controls bacteria and microbes, draws out moisture (affecting texture and preservation), and helps preserve the cheese. Salt is added at specific points in cheesemaking and in different ways (dry-salting or brining), each with effects. Understanding salt's multiple roles reveals why it's so important to cheese. Here's what salt does in cheesemaking and how it's used. Salt is one of cheese's most important, if underappreciated, ingredients.
Flavor
The most obvious role of salt is flavor. Salt seasons the cheese, enhancing its taste and bringing out its other flavors. Different cheeses have different salt levels — from lightly salted fresh cheeses to heavily salted brined cheeses (feta) and blues — and the salt level is part of each cheese's character. So salt provides essential seasoning and flavor, balanced to suit each cheese. Beyond just "saltiness," salt enhances and balances a cheese's overall flavor. The right amount of salt is crucial to a cheese tasting good — too little tastes flat, too much overwhelms.
Controlling Microbes
A key technical role of salt is controlling microbial activity. Salt inhibits the growth of unwanted, spoilage, and harmful bacteria, while allowing the beneficial cultures and molds to develop properly. This helps keep the cheese safe and ensures the right microbes (the cultures and intended molds) flourish while bad ones are suppressed. In blue cheeses, for example, salt helps control the mold's growth. So salt controls which microbes grow, suppressing unwanted ones and supporting the intended cultures and molds. This microbial control is essential for the cheese to develop correctly and safely, making salt a key functional ingredient, not just a seasoning.
Drawing Out Moisture and Texture
Salt also draws moisture out of the curds (through osmosis), which affects the cheese's texture and moisture content. Removing moisture helps firm the cheese, influences its texture, and (by reducing available water) aids preservation. The salting method and amount thus affect how moist or firm, and how well-preserved, the cheese is. So salt draws out moisture, firming the cheese and shaping its texture, while reducing the water that microbes need. This moisture control is another way salt influences the cheese — affecting texture and helping preservation by limiting available moisture. Salt's osmotic effect is part of how it shapes the finished cheese.
Preservation
Salt is a preservative, and this was historically one of its key roles in cheese. By controlling microbes and reducing available moisture (water activity), salt helps preserve the cheese, extending its shelf life and protecting it from spoilage — important especially before refrigeration, and still relevant today (notably in brined cheeses like feta, which are preserved in salt brine). So salt helps preserve the cheese, controlling spoilage and extending shelf life. This preservative role, alongside flavor and microbial control, is why salt is essential. Heavily salted and brined cheeses keep especially well thanks to salt's preservative effect.
How Salt Is Added
Salt is added to cheese in a few ways. Dry-salting: mixing salt directly into the curds, or rubbing it on the surface of the formed cheese. Brining: submerging the formed cheese in a saltwater brine (used for many cheeses, like feta, mozzarella, and Gouda), where the cheese absorbs salt. The method and timing affect how the salt is distributed and the cheese develops. So salt is added by dry-salting (into curds or on the surface) or brining (in saltwater), depending on the cheese. Each method suits different cheeses and affects salt distribution and the cheese's character. The salting step is a key, deliberate part of cheesemaking.
Frequently Asked Questions
Why is salt important in cheesemaking?
Salt does more than flavor — it controls microbes (suppressing unwanted ones, supporting intended cultures and molds), draws out moisture (affecting texture), and helps preserve the cheese, alongside seasoning it.
How is salt added to cheese?
By dry-salting (mixing salt into the curds or rubbing it on the surface) or brining (submerging the cheese in saltwater, as for feta, mozzarella, and Gouda), depending on the cheese.
Does salt help preserve cheese?
Yes — by controlling spoilage microbes and reducing available moisture, salt helps preserve cheese and extend its shelf life, historically a key role and still important (especially in brined cheeses).