Can you eat expired food if it hasn't been opened?

Chef's answer
If stored properly, food will be good even after its expiration date. Most expiration dates are "largely made up," Business Insider notes. ... Food consumed after its expiration date might not be harmful to the body, assuming it has been stored properly, and bacteria likely hasn't had time to start growing.
Frequently asked Questions 🎓
Fresh meat, poultry and fish are highly perishable so they have "sell by" dates. This is an expiration date for how long a grocery store can display that food. Purchase the food product before the expiration date on the package. If there is a "use by" or "freeze by" date, follow that date.
A few more cooking questions 📍