Researchers in China have analyzed a 2,500-year-old unopened bottle of liquor, providing new insights into ancient brewing techniques. The beverage, originating from the Henan province, was found to be made from broomcorn millet, wheat, and barley. Its composition suggests a sophisticated understanding of fermentation, evidenced by the presence of 'qu,' a moldy yeast starter. AI
RANK_REASON The cluster describes a scientific paper analyzing ancient beverage composition. [lever_c_demoted from research: ic=1 ai=0.0]
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