best-before date; use-by date; expiry date
Refers to the date until which a food product is expected to retain its best flavor and quality. In Japan, this is distinct from 消費期限 (use-by date for safety).
This milk's best-before date is tomorrow.
Food past its best-before date is not necessarily inedible right away.
This yogurt's best-before date has already passed.
Please check the best-before date before buying it.
The best-before date is coming up soon, so let's eat it now.
I try to finish eating it before the best-before date passes.