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A Diet Coke and Mentos eruption, Also known as a Mentos eruption or a coke geyser is a reaction of...

A Diet Coke and Mentos eruption, Also known as a Mentos eruption or a coke geyser is a reaction of Diet Coke and mint Mentos candies. A two-liter bottle of Diet Coke or of another carbonated beverage is used. Diet Coke is preferred because it tends to react better. Dropping some Mentos into the bottle, usually around four, causes the Diet Coke to foam at a rapid rate and spew into the air. Mint-flavored Mentos are used, as fruit-flavored Mentos have a smooth coating which slows the reaction. Because of the spectacular nature of this physical reaction and the easy availability of the ingredients, the eruption is a popular subject for Internet videos, and has also appeared in non-Internet sources. A variation of this experiment consists of making the bottle rocket up by closing the cap shortly after Mentos is inserted and then slamming the bottle into the ground cap first. The explosion will generate a reaction like a rocket. Steve Spangler initiated the Internet phenomenon when he appeared on 9News in 2002 and 2005, both times showcasing the experiment. The experiment's result was then further popularized by the website Eepybird.com, which promoted a video in which Fritz Grobe and