What is "deep-frozen"

Usage examples of "deep-frozen".

I bet You my gold badge if there's a deep-frozen ayrab courier up front, Meyer Cohane's JDL boys are in back of it.

There are rather more accounts of the explosion that occurred on the second Friday of the cooking process, which caused red-hot short-crust pastry to scythe across a large part of Ankh-Morpork and accounted for the occasional shower of sultanas and deep-frozen baked apple for some days afterwards.