anyone know the foolproof way to store berries?

I soak berries briefly in water to which a splash or two of vinegar has been added (I believe I learned the method on this site a year or two ago). This is supposed to kill off or reduce any baddies (fungus, bacteria?) and prolong storage life. Then I line a baking sheet with a couple of layers of paper towels, drain the berries, put them in a single layer on the towels to dry. I store them in a small collapsible colander or container and store them uncovered in the fridge.

In the freezer.

With newer and better fools being born every minute, is anything really foolproof?

Ah, thanks! I will check out those to go cups. I too use the layers of paper towels method, the best I have found so far. Always on the lookout for other ways. Thanks again.

I bet it was hawking the veggie and fruit to go cup. It's a little colander nested in a container. It looks good to me for packing lunch, but not long term storage. My most successful method of storing berries is to layer them with towels (paper or thin cloth) in a storage container. I stack the layers, but have a towel between each single depth layer of berries.