When buying groceries a lot of time many ingredients are bought at the same time for an entire week.

Add value, a statistic to indicate how long you can keep the ingredients before spoiling.

create a counter for a week +

the lower the counter the earlier the ingredients will spoil. As a lot of recipes may have fresh ingredients the counter can go to 7 days,

also add an option to go 7+ to indicate that it is longer.

As this is an feature focused on the shoppinglist we do not need to know the exact time it can be stored, like canned food and frozen items. 7+ shows that you dont have to worry about spoilage.