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Wikipedia
Coating is a covering that is applied to the surface of an object, usually referred to as the substrate. In many cases coatings are applied to improve surface properties of the substrate, such as appearance, adhesion, wetability, corrosion resistance, wear resistance, and scratch resistance. In other cases, in particular in printing processes and semiconductor device fabrication (where the substrate is a wafer), the coating forms an essential part of the finished product. Coatings may be applied as liquids, gases or solids. Coatings can be measured and tested for proper opacity and film thickness by using a Drawdown card.
[edit] About Coating
This technique involves covering food with a layer of thick liquid such as batter or beaten eggs and breadcrumbs, to protect it when cooking. Fried foods are often coated before being cooked in hot fat.


