racking
n.— «Racking is where the brewer gives the fermenting beer a good, thorough stirring. Will racks three times a day during the fermenting stage, for a couple of minutes each time. This aeriates the beer and prevents the yeast from being starved of oxygen.» —“Flamin Nora, that’s a heady brew!” Morecambe Today (U.K.) Feb. 8, 2006. (source: Double-Tongued Dictionary)
Further reading
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