How do food producers work out the best before date?

Question

Especially foods with a long shelf life. How do they know it’ll keep for 27 months or whatever?

In: 0

Answer 1

A relative of mine used to work in the field of frozen food. They conducted a “crash test”: If you defrost and re-freeze food several times, this mimics “decay” in a quicker way. From those results, they could figure out shelf life (without actually having to wait e.g. 27 months).