For centuries, before refrigeration, an old Russian practice was to drop a frog into a bucket of milk to keep the milk from spoiling. In modern times, many believed that this was nothing more than an old wives’ tale. But researchers at Moscow State University, led by organic chemist Dr. Albert Lebedev, have shown that there could be some benefit to doing this, though of course in the end you’ll be drinking milk that a frog was in.

How to Keep Milk from Spoiling Without Refrigeration