Keeping Milk Fresh — With Frogs
Long before modern refrigeration, people in Russia and Finland reportedly placed living Russian brown frogs in milk to keep it fresh.
It turns out the curious practice has a basis in science: Recent research on the amphibians’ skin secretions led by Moscow State University organic chemist A.T. Lebedev shows they’re loaded with peptides, antimicrobial compounds as potent against Salmonella and Staphylococcus bacteria as prescription antibiotics.
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