Are Lemons More Sour than Vinegar? The relation between acid taste and concentration of the acid, expressed chemically, has been studied by two Argentinian workers, A. Berlatzky and T. Guevara. Apparently the lemon is more sour than vinegar, for the acid taste was perceived in a lower concentration of citric acid than acetic add. Tartaric, hydrochloric, and lactic acids came in between.-Science Service
