The English always think the Germans terribly rude. In turn, Germans find these English (also Irish, I guess) conventions of running around things fifteen times for ritual terribly exhausting, a complete waste of time and honestly, just an outright lie.
Take email rules. Germans ridicule this "Hi, how are you, how's the family?" loop before the email (or phone call, or meeting) comes to "I need this from you." A German mail is "Hi, I need this. Thanks." That is not rude at all; the contrary, you did not force your family on me and didn't pretend to care about things that you do NOT care about, and you didn't impose on me with private things from strangers that I do not care about. (in the English mail, signified by the fact that there are no actual answers. "Fine!" .... Great, that was useless and just signaled openly that we really do not care and the question was, in fact, a lie.)
This isn't just different between cultures, it's different between status positions, scenes, relationship levels. If someone I'm just getting to know asks me for lunch and I don't feel like it, I'll say "I'd love to, I can't" if I do want to keep making a relationship with that person. If someone's an old friend, I'll say, "I don't want to", knowing that our friendship won't be hurt by that.
It's basically just giving some room for that social interaction, which may or may not be used.
Thus, there are deeper contextual frames you need to understand in order to know if that "how are you" actually means "please, open up" or it it only means "I'm just checkmarking politeness in this convo before I tell you to stay 3 hours longer today".
For a really good look at tea drinking read Strumpet City, apart from it being an amazing novel, has the many ways they brewed and drank tea at the turn of the century.
Irish Black tea tends to be different than English Black tea, apart from being superior of course, we source the leaves from different locations, something something due to rationing during WWII...