Processed cheese

What is Processed cheese?

Processed cheese is a manufactured dairy product formed by blending natural cheeses with specific chemical agents. These agents, known as emulsifying salts or calcium chelators, prevent the fat from separating when the mixture is heated. The final product typically contains fifty to sixty percent actual cheese, with the remainder consisting of additives such as salt, vegetable oils, sugar, or unfermented dairy ingredients. It appears as a solid block or individual slices, often yellow or off-white in color. Unlike traditional cheeses, processed varieties do not become lumpy or oily when melted, maintaining a smooth and consistent texture throughout heating. This stability makes it distinct from aged or fresh artisanal wheels.

Where does Processed cheese come from?

The concept originated in Switzerland in 1911. Inventors Walter Gerber and Fritz Stettler sought a cheese with a longer shelf life. They added sodium citrate to melted Emmentaler cheese, discovering that the resulting sauce could cool back into a solid form. This innovation was influenced by traditional Swiss fondue and cheese sauces. Shortly after, in 1916, James L. Kraft applied for the first United States patent for a method of storing cheese. His technique involved sterilization to halt the maturation process, allowing the product to remain stable for extended periods without refrigeration.

What does Processed cheese taste like?

The taste profile is generally mild and salty, designed for broad appeal rather than complexity. Because the manufacturing process involves blending various cheeses and adding stabilizers, individual flavor notes are smoothed out. The texture is uniform and plastic-like, lacking the crystalline crunch of aged cheeses or the creaminess of soft ripened varieties. When heated, the flavor remains unchanged, which is a key technical advantage over natural cheeses that can develop bitter or separated tastes under high heat.

How Processed cheese is made

Manufacturers start with one or more natural cheeses, excluding certain types like cottage cheese. These are melted together with emulsifying salts, such as sodium phosphate or citrate. These salts sequester calcium, breaking down the protein network so fat and protein mix uniformly instead of clumping. Additional ingredients may include water, milkfat, spices, or artificial colors. The mixture is then subjected to heat-based sterilization methods, such as canning or pasteurization. This step kills microorganisms, stopping further aging and ensuring the product does not spoil quickly. The final blend is molded into blocks or sliced packages.

How Processed cheese is eaten and cooked

Processed cheese is primarily used in applications requiring reliable melting behavior. It is a standard ingredient in grilled cheese sandwiches and cheeseburgers because it stretches smoothly and resists congealing. It is also used in casseroles, pizzas, and other baked dishes where a consistent melt is desired. In the United States, specific blends like Provel are used for St. Louis-style pizza. Its resistance to separation makes it suitable for cheese sauces and dips that must remain fluid during serving.

Processed cheese through the day

This product is most commonly associated with lunch and snack meals. It is a staple in school cafeterias and quick-service restaurants due to its low cost and ease of preparation. Individual slices are frequently eaten on their own as a snack or paired with crackers. It serves as a primary component in fast-food burgers and simple sandwiches, providing a quick source of dairy calories without requiring slicing or grating equipment.

Processed cheese in the world's kitchens

In the United States, processed cheese has become deeply embedded in everyday eating habits. Brands like Kraft and Borden market American cheese, which is typically a blend of Colby and cheddar. The product is ubiquitous in households, particularly for casual dining. In the United Kingdom, similar products are often sold as singles or referred to as American cheese, though local brands like Dairylea and The Laughing Cow dominate the spreadable segment. The cuisine reflects an industrial approach to dairy, prioritizing convenience and consistency over regional tradition.

Buying, keeping and serving Processed cheese

The sterilization process allows processed cheese to be stored at room temperature before opening, giving it a significantly longer shelf life than natural cheese. Once opened, it should be refrigerated. It is often sold in individually wrapped slices or blocks to maintain freshness. Some older packaging formats include unpressurized cans, though modern retail mostly uses plastic wrappers or boxes.

What to use instead of Processed cheese

Natural cheeses like cheddar, Colby, or Swiss can be used as substitutes, though they will melt differently and may separate if overheated. Cheese spreads or cheese foods contain lower percentages of actual cheese and higher moisture, altering the texture. For recipes requiring a specific melt, using a blend of natural cheeses with a small amount of cornstarch can mimic the stability of processed varieties.

Protection and trade

The industry is heavily regulated, particularly in the United States by the Food and Drug Administration. Legal definitions distinguish between pasteurized process cheese, process cheese food, and process cheese spread based on moisture and fat content. Manufacturers sometimes use unregulated terms like prepared cheese product to avoid strict standards, allowing the use of ingredients like milk protein concentrate. Major companies produce these items on an industrial scale, benefiting from lower distribution costs and steady supply chains compared to traditional cheesemakers.

Questions people ask about Processed cheese

Good reading and sources

• Encyclopaedia BritannicaArticle
• What Is Processed Cheese, and Should We Eat It?Bon Appetit, Article

• Processed cheese on WikipediaEncyclopedia
• More photos on Wikimedia CommonsPhotos and video
• Wikidata recordOpen data