debases by adding inferior material
The Federal Food, Drug, and Cosmetic (FD&C) Act (1938) provides that food is “adulterated” if it meets any one of the following criteria: (1) it bears or contains any “poisonous or deleterious substance” which may render it injurious to health; (2) it bears or contains any added poisonous or added deleterious substance …
to debase or make impure by adding inferior materials or elements; use cheaper, inferior, or less desirable goods in the production of (any professedly genuine article):
to adulterate food.
transitive verb. : to corrupt, debase, or make impure by the addition of a foreign or inferior substance or element; especially : to prepare for sale by replacing more valuable with less valuable or inert ingredients.