Longtime reader Ellie shared a tip she received from her friend Katie.
The key to preventing moldy berries? Vinegar!
Raspberries in particular seem like they can mold before you even get them home from the market. There’s nothing more tragic than paying $4 for a pint of local raspberries, only to look in the fridge the next day and find that fuzzy mold growing on their insides.
A friend of mine shared this tip with me a few weeks ago, and it really, really works. When you get your berries home, prepare a mixture of one part vinegar (white or apple cider probably work best) and ten parts water. Dump the berries into the mixture and swirl around. Drain, rinse if you want (though the mixture is so diluted I find you can’t taste the vinegar,) and pop in the fridge.
The vinegar kills any mold spores and other bacteria that might be on the surface of the fruit, and voila! Raspberries will last a week or more, and I’ve had strawberries go almost two weeks without getting moldy and soft. So go forth and stock up on those pricey little gems, knowing they’ll stay fresh as long as it takes you to eat them.
I haven’t tried this. Have you? My hunch is that once you nailed the proportions of the vinegar-water mixture, it would really work. The trick is to have enough vinegar in the mixture to kill the bacteria, but not so much that your berries taste sour.