Would that even work? As the ice melts, only a small part of the mentos would be exposed, with a gradually increasing surface area. But I’d expected it only works because of the whole surface being suddenly exposed.
Perhaps dip them first in a simple syrup to buy a little time, then start with very chilled water, add the mentos, then freeze quickly? I have doubts about the whole affair though.
Chill the mentos in advance, too. Things are usually less reactive when cold.
No. As the soda would lose most of the carbonation pouring it into the glass
Yes, however the (oh god no! I’m being that guy!!) pouring it into the glass even carefully down the side loses the carbonation that “makes” the mentos and coke work. You really can only do it from in the bottle
No, for several reasons.
Ice would expose mentos way too slowly. Mentos being in water and freezing would have already removed the texture that makes it work to begin with. By the time the ice melted enough a lot of the carbonation would have already escaped the soda. One mentor isn’t enough to cause much reaction. The soda would be cold from the ice and that slows the release of the cO2…