Make a Mentos-and-Soda Fountain! There is a pretty cool thing you can do with a bottle of soda pop and a packet of Mentos. Let’s try it! First, make a tube for the Mentos. 1. Cut a piece of paper so ...

Fermentation time: 2 to 3 days. Storage time: 3 to 5 days in the refrigerator. This lively soda packs a probiotic punch while making use of the castoffs from your summer pie or smoothie.