(rare) The statistical and psychological observation that a person is prone to prefer Coca-Cola over Pepsi when they have labels, but prone to prefer Pepsi over Coca-Cola when they are unlabelled.

(chemistry) peptohydrochloric

plural of pepsinogen

(biochemistry, archaic) A hypothetical acid supposed to be formed when pepsin and dilute hydrochloric acid are mixed together.

Treated with pepsin.

A comparison between two unlabelled products.

plural of Pepsi Challenge

Treated with pepsin

(biochemistry) The lysis of proteins by means of pepsin

Treatment with pepsin