Cream cheese

Cream cheese is a soft, mild-tasting, white cheese with a high fat content. Traditionally, it is made from unskimmed milk enriched with additional cream.

In the it is defined by the  as containing at least 33% milkfat (as marketed) with a  content of not more than 55%, and a  range of 4.4 to 4.9. In other countries it is defined differently and may need a considerably higher fat content.

Cream cheese is not naturally matured and is meant to be consumed fresh, and so it differs from other soft cheeses such as Brie and Neufchâtel. It is more comparable in taste, texture, and production methods to Boursin and Mascarpone.

Origin
There are references to cream cheese in as early as 1583  and in  as early as 1651. Recipes are recorded soon after 1754, particularly from and the southwest of England.

According to the American food processing company, the first American cream cheese was made in in 1872 by American dairyman William Lawrence. In 1880, 'Philadelphia' was adopted as the brand name, after the city that was considered at the time to be the home of top quality food in the USA.

The technique is known to have been in use in since the 1850s, producing cheeses with higher fat content than the US model,  and  Philadelphia cream cheese has been suggested as a substitute when petit suisse is not available.

Following successful by Kraft Foods in, some people there refer to "queso filadelfia" instead of "queso crema" or "queso cremoso".

Usage
Cream cheese is typically used in savory snacks of various types (for example, as a spread on, , crackers, various types of raw vegetables, etc.), and can be used in cheesecakes and salads. It can also be used to make cheese sauces. It can be a base to some spreads, such as yogurt-cream cheese topping for graham crackers, (1.25 parts cream cheese, 1 part yogurt, whipped.). It is sometimes used in place of (or alongside butter in a ratio of two parts cream cheese to one part butter) when making cakes or cookies, and it is also used to make cream cheese icing, which is similar to  icing, (using a ratio of two parts cream cheese to one part butter) which is used to ice. It is the main ingredient in, an appetizer commonly served at American Chinese restaurants. It can also be used instead of butter or olive oil in mashed potatoes to create a creamy taste.

Manufacture
Cream cheese is difficult to manufacture. Normally, molecules in milk have a negative, which keeps milk in a liquid state; the molecules act as surfactants, forming micelles around the particles of fat and keeping it in. are added to and homogenized milk. During the fermentation at around 23 °C, the of the milk decreases. Amino acids at the surface of the proteins begin losing charge and become neutral, turning the fat micelles from to  state and causing the liquid to coagulate. If the bacteria are left in the milk too long, the pH lowers further, the micelles attain a positive charge and the mixture returns to liquid form. The key then is to kill the bacteria by heating the mixture to 52-63 °C at the moment the cheese is in an, meaning the state at which half the ionizable surface amino acids of the proteins are positively charged and half are negative. Inaccurate timing of heating leads to an inferior or unusable product.

However, subtle changes in the timing of the process can result in variations in flavor and texture. Furthermore, because cream cheese has a higher content than other cheeses, and fat repels water, which tends to separate from the cheese, stabilizers such as guar and carob gums may be added to prolong its {{Wikipedia reference|shelf life]].