I once bought some Camembert in France which, instead of having an expiration date, had a date to determine the ripeness of the cheese e.g. "Eat this cheese 30

I once bought some Camembert in France which, instead of having an expiration date, had a date to determine the ripeness of the cheese e.g. "Eat this cheese 30 days after this date if you like it ripe and runny".