What is Emulsify?

Emulsify — An emulsion is a stable suspension of fat and another liquid. To emulsify is to combine fats (such as butter or oil) with a liquid (such as vinegar or citric juices) into a smooth and even blend using an emulsifier (such as an egg yolk) which binds to each set of ingredients and prevents them from separating. Hollandaise is a classic emulsified sauce.