Public domain
Tillamook cheese plant. Tillamook County, Oregon. A lactic ferment starter is added when the milk is poured into these 10,000 pound stainless steel vats. Worker is testing acidity of curdling milk
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Credit lineTillamook cheese plant. Tillamook County, Oregon. A lactic ferment starter is added when the milk is poured into these 10,000 pound stainless steel vats. Worker is testing acidity of curdling milk. 1941-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.