Q:

What is a permanent emulsion?

A:

Quick Answer

A permanent emulsion is a combination of two ingredients that normally don't mix well, but they come together to form a new stable mixture that does not separate. A temporary emulsion is a blending of ingredients that eventually separate.

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Full Answer

The most common emulsions are salad dressings. Simple dressings that are made from oil, water and seasonings are temporary emulsions, which is why they must be given a good shake before using so that the ingredients mix together. Dressings that use eggs or dairy products as a base, such as ranch, Caesar or blue cheese, are permanent emulsions that do not need shaking before use.

Mayonnaise is also a permanent emulsion. It is made by slowly incorporating egg yolks into oil with a touch of lemon juice or vinegar until they come together to form the final product.

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