A blast freezer is a freezer which is extremely cold. It may also be
known as a shock freezer. Such freezers are intended to rapidly
bring the temperature of foods down, freezing them extremely
quickly. These specialized freezers are used in the frozen food
industry and they are also utilized in some commercial kitchens
for specialty tasks.
When food is frozen, the water inside it crystallizes. If freezing
takes place at relatively warm temperatures, the ice crystals
which form will be large.
