Easy Cheese
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Easy Cheese
An 8 oz. can of Easy Cheese.
Easy Cheese on a pretzel

Easy Cheese is the trademark for a processed cheese spread product distributed by Mondel?z International. It is also referred to as aerosol cheese, spray cheese or simply cheese in a can, and is similar to squeeze cheese (a semi-solid cheesefood from the 1970s packaged in a squeezable plastic tube). Easy Cheese is packaged in a metal can filled with air covered with a plastic cap that reveals a straight, flexible nozzle where the cheese is extruded.

The product was first manufactured and marketed by Nabisco in 1965 under the name Snack Mate until 1984. Advertisements often displayed the orange product adorned in flowy peaks atop several different types of Hors d'oeuvres. As a 1966 advertisement says, it was "instant cheese for instant parties."[1] Easy Cheese is currently available in Cheddar, Sharp Cheddar, Cheddar 'n Bacon, and American flavors. Discontinued varieties include Pimento, French Onion, Cheddar Blue Cheese, Shrimp Cocktail, and Pizza.

## Physical-chemical properties

### Molecular composition

Processed cheese spreads, like Easy Cheese, have a moisture content that ranges from 44-60%, while its milk fat content must be greater than 20%.[3] Milk proteins are needed for processed cheese spread production, and contains two main types: casein, which accounts for at least 80%, and whey protein, which can further be classified into ?-lactalbumin and ?-lactoglobulin. The manufacturing of processed cheese spreads uses natural cheese with a composition that ranges from 60-75% intact casein.[4]

#### Water

Water plays a multitude of functions in Easy Cheese. First, it allows for more stable emulsion, serving as a medium for the hydrophilic moieties of chelating salts. More specially, chelating salts bind calcium ions to hydrate proteins and create a more uniform spread. Water also provides the moisture content needed in processed cheese spreads to achieve the desired texture.[5] Excessive water, however, can result in a lack of viscosity resulting in a cheese spread that has more liquid than solid properties after passing through the plastic extruder. The addition of too much water may likewise increase the product's susceptibility to microbial growth.

### Physical structure

#### Viscosity

The interactions between proteins and carbohydrates play an important role in the viscosity of processed spreads. More specifically, sodium alginate contributes to the integrity of the gel-like network formed by the casein and salts. The newly formed network is made possible through cation binding, which converts the hydrophilic sodium alginate into hydrophobic calcium alginate (Ma). Guluronic acid residues that are linked together demonstrate a high affinity for calcium ions. Sodium alginate works in conjunction with the destabilization of the casein micelle where calcium ions can interact with guluronic chains (Ma). Due to a mixture of these interactions, a gel-like structure is formed rather than a true gel structure.

Whey products in processed cheese spreads increases the viscosity of the overall product due to the "intermolecular interactions between adjacent protein molecules with the formation of weak transient networks" formed from the conglomerate cheese mass.[6] The protein concentration within the cheese matrix is directly proportional to the viscosity of the solution due to their interactions with hydrated protein molecules. Therefore, the continuous phase of the oil-in-water emulsion has a greater contribution to the viscosity of the cheese product over than the discontinuous phase.[7]

#### Flow properties

Easy Cheese exhibits pseudoplastic behaviors during extrusion of the product and is represented using the Herschel-Bulkley Model:

${\displaystyle \sigma =K{\dot {\gamma }}^{n}}$

This power law model represents a type of non-Newtonian fluid relating shear rate and shear stress with viscosity.[8] As cheese is pushed out of the can shear rate increases causing a decrease in viscosity and higher flow rates of the material. In this case, the cheese behaves more as a fluid. After it is expelled, there is no more shear rate and the cheese retains its original higher viscosity. Here, the cheese behaves like a solid.[8] Easy Cheese must provide a smooth uniform texture whilst maintaining its viscoelastic structure to maintain its shape after extrusion from the can.

Sodium alginate is the one of the main ingredients that is responsible for Easy Cheese's pseudoplastic characteristics. More specifically, it contributes to the integrity of the gel-like network formed by the casein and salts. The newly formed network is made possible through cation binding, which converts the hydrophilic sodium alginate into hydrophobic calcium alginate. Guluronic acid residues that are linked together demonstrate a high affinity for calcium ions. Sodium alginate works in conjunction with the destabilization of the casein micelle where calcium ions can interact with guluronic chains.[8] Due to a mixture of these interactions, a gel-like structure is formed rather than a true gel structure. About 0.05-0.5% weight by volume of sodium alginate at a 5.4-5.7 range must be added to the cheese mixture to exhibit these properties during extrusion.[8]

## Can design

Although sometimes called "aerosol cheese", its container is not actually an aerosol spray can, because the cheese does not usually combine with a propellant (such as nitrogen) to turn into a fine mist upon being sprayed. Rather, the can contains a piston and a barrier plastic cap which squeezes the cheese through the nozzle in a solid column when the nozzle is pressed and the propellant expands in volume. The propellant does not mix with the cheese. Normal aerosol cans are charged with all of their contents through the single opening at the top, but spray cheese cans are separately charged with the product through the top and propellant through the bottom. This explains why the can has a small rubber plug on its base. The can design also ensures that the cheese can be dispensed with the can upright or inverted.