Barium. Here is your Barium Fun Fact:Barium, the name for the element of atomic number 56 on the Periodic Table of the Elements, comes from the Greek word "barys," meaning "heavy." Barium is a relatively heavy element because it has 56 protons in its nucleus (compared to chlorine, for example, which has only 17). The same number of electrons balance the electrical charge.
Tasted sort of like a vanilla like milk shake. Actually more like the pre-fiber and artificial sweetner days of Slim-fast. But they aren't kidding when they say heavy.