Carbonates
In many consumer beverages such as Soft_Drinks, carbonation is used to give “bite.” The fizzy taste can be caused by dilute carbonic acid inducing a slight burning sensation, but is never caused by the presence of bubbles. This can be shown by drinking a fizzy drink in a hyperbaric chamber at the same pressure as the beverage. This can give much the same taste as at sea level. In any case, the bubbles will be completely absent during this experience. If you were to taste a flat soda at this pressure, you might experience a much different flavor profile as carbonic acid has a low vapor pressure, and the only “bite” would come from other acids in the soda. However, in the case of Pepsi and Coca-Cola, much of the perceived bite is due to phosphoric acid, an acid not known for fizz or changes in flavor profile due to changes in pressure.
