Syntax of "Best Before"
Solution 1:
(Cambridge dictionnary) best-before date noun [ C ] COMMERCE UK
(US best-if-used-by date)
the date after which food or drink begins to lose its quality or taste:
Here is one likely short prototype:
- It is best to consume before
However, there is no necessity to confine oneself to a particular form. The following is as well an option.
- this product is best if consumed before
As a mere abbreviation of several possibilities (from user Djin Tonic, see comments)
- (This) item/product/… (is) at its best before [date]