Move over, 15-year cheddar. Researchers believe they may have found a sample of cheese residue dating back some 7,000 years — the earliest known appearance of the preserved dairy product. Archaeologists began uncovering ancient pieces of hole-riddled pottery in Poland in the 1920s and ’30s. The reassembled ceramics immediately brought to mind modern cheese strainers for Princeton anthropologist Peter Bogucki, who published a paper on them in 1984.
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