Can you partially microwave frozen food to separate it and then re-freeze? The reason I ask is I quite often buy a box of vegetarian bacon. There are eight slices in the box but when you only want two of them they are inseparable because they are all frozen together. It's the same with buying a pack of six oatcakes and then placing them in the freezer for later use. You want two, not six at any one time and you have to chisel them apart if you don't heat them to separate.