Listen, if Early Grey were Captain Picard’s favorite tea, then that would be his default setting for “tea”. That he orders “Earl Grey” means he must most often have something else. No matter how much we like our favorite we sometimes want something different and it so happens that we the viewers just happen to keep catching him when he is not having his actual favorite tea.
Since he also specifies “hot” I conclude ordinarily Picard enjoys iced tea. I bet it’s with a three-parts-sugar-to-one-part-tea ratio.
Anyway I have forgotten my password. It was “one one A, two B”.