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How To Keep Berries Fresh
Prepare a mixture of one part vinegar(white or apple cider probably work best)
and six parts water. Dump the berries into the mixture and swirl around.
Drain, rinse if you want (though the mixture is so diluted 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 strawberries go almost two weeks without getting moldy and soft.
(This works well for washing other fruit & vegetables such as apples, pears, peppers
etc. Use 1 part vinegar to 3 parts water, let the fruit/veggies sit for 10 minutes, swirl around
rinse & drain.)