Vinegar?

GoodDog;5391976 said:

Look what I found. Blue Pacific Flavors-Taste Technologies

B-Block™
A breakthrough flavor technology that block’s bitter flavor receptor sites on the tongue. The innovative blend of bitter blocking compounds and flavor enhancing compounds blocks bitter and astringent notes, while simultaneously lifting and enhancing the overall desirable flavor of a food or beverage. Blocks the “off notes” typically associated with: Vitamins, Minerals, Fish Oil, Soy, Preservatives, and many other functional food ingredients.

Click to expand...