It's been awhile since the last update, so here's a scene from the HPMOR in my head.

Hermione offers Harry a Bertie Bott's Every Flavour Bean, warning him that when they say "every flavour" they mean every flavour. The first one that Harry eats is booger-flavoured, and he gets frustrated about the foolish candy-makers, complaining that of all the flavours that he could've gotten, his first bean tasted like boogers. Hermione reminds him that it says "every flavour", so he shouldn't be surprised if it ended up tasting like something nasty. Harry has Hermione list flavours of Bertie Bott's beans that she has eaten, and then goes on a rant:

Out of all possible flavours, every single flavour that Hermione has mentioned is recognizable as something regularly found on or in the human body, and the majority are types of food. Harry tries to explain the concept of flavourspace - the entire set of all possible flavours - and what a skewed understanding of flavourspace wizards must have if "every flavour" beans only draw from the tiny proportion of flavourspace which they already regularly taste. So, yes, he should be surprised that the first bean he ate, which could have taken on any flavour in the vast universe of flavourspace, tasted like something that normally grows just inches from one's taste buds.