– How do they determine the food products expiry date?

Question

Like how can a canned tuna stay edible after almost a year? or other products such as chips or chocolates, etc.

In: 3

Answer 1

Two different questions here.

Expiration dates on food products are actually not expiration dates – they are “sell by” dates. They are the manufacturer’s best guess as to when the food will lose “optimal freshness.” It is just a guess and should not be taken as gospel.

Canned tuna can stay fresh for years because it is sealed in an air-tight can and then heated to a temperature where all the bacteria inside the tuna die. No bacteria means no food spoilage.