How would you even find out if you have a minority opinion without speaking out? Maybe the company coffee machine starts using new beans and I don't like the t

How would you even find out if you have a minority opinion without speaking out? Maybe the company coffee machine starts using new beans and I don't like the taste. No one else is complaining, so should I keep my mouth shut? If I say "hey I don't like this coffee" and everyone else goes "it's fine" then I have to get different coffee. If however everyone else says "it sucks" then maybe it'll get changed back.