
A
Diet Coke and Mentos eruption is a reaction between the
carbonated beverage
Diet Coke and
Mentos mints that causes the liquid to spray out of its container. The mints cause
nucleation that releases dissolved carbon dioxide so fast it pushes the liquid up and out of the bottle, in what has been described as an eruption or geyser. Though this was demonstrated on television as early as 1999, the reaction went
viral in 2005, after
Steve Spangler posted a video to
YouTube.