...Is he going to try it?

Something something it could be dangerous, blah de blah it could be gross, which was what Tidus was more concerned about (it's a weird dripping thing coming down a mountain--you don't lick tree sap), but he sure isn't going to tell Gerome what to do with his life.

Be the sacrificial taste taster, Gerome. Or maybe he's just feeling it. Either way, Tidus won't interrupt.