The Container in Which the Berries Are Harvested Can Tell You About Their Health.
Unlike some of the more complex fruits, berries are relatively easy to identify for ripeness. Their color is a good indicator, but as Kitsch points out, there are some subtle signs that the berries are about to go bad.
Oddly enough, the container can be a sign of a tainted berry. They explain:
The container they are in is wet or stained.
This is probably a sign of overripe soft berries at the bottom of the basket. Since you cannot rummage through the basket to find out, checking the bottom and sides of the container is a good indicator. There is usually a moldy berry in a container with these marks. Your best bet is to get a new box.
Of course, this won’t always be the case, but it could be a sign that you need to at least double check the berries you are dealing with. For more details, navigate to The Kitchn’s full post at the link below.