[caddemon]

I'm pretty sure the exams to become certain levels of somellier involve passing a taste test, and for the highest level it requires picking out very specific info about grapes and vintage. I could believe that a random person off the street wouldn't tell the difference between white and red, but it seems highly implausible that an actual expert couldn't, because in order to even become an expert they'd have to be proficient at a harder task.