Mints contain many pectin-like substances. The pore structure of these substances physically reacts with carbonic acid, which will accelerate the release of carbon dioxide, thus producing the "bubble fountain" phenomenon.

Principle:

The numerous small pores on the surface of Mentos will produce a catalytic effect, releasing the carbon dioxide gas in the soda, causing a large amount of foam to erupt rapidly. Although any carbonated drink can produce a similar reaction.