Dear Home Ec 101:
Flash Freeze, does that involve liquid nitrogen?
Well, for some industries such as commercial fishing it could.
However, here at Home Ec 101 we are only equipped with the usual appliances and baking supplies. Flash freezing is simply a term used to mean freezing an item as quickly as possible before it wrapping it for storage. Items such as berries or beans that are damp or that may clump together are often flash frozen before being stored.
Simply spread the item to be frozen in a single layer on a baking sheet and place in the freezer. Once the item is frozen, wrap or baggie it for long term storage.