There are various methods available for food freezing, these include: air-blast freezers (batch and continuous), fluidised bed freezers, impingement freezers, liquid immersion freezers, plate freezers, liquid nitrogen freezers and carbon dioxide freezers. The major advantage of the air blast freezer is its versatility. Since air is a low viscosity fluid it has the ability to easily follow around irregular surface geometries, thus providing a more uniform freezing rate over the whole product. Other freezing methods such as plate freezing (contact freezing) offer faster cooling times [2] but can only be used with products of a suitable geometry, i.e. a flat surface to match the plate bed.