Well, I had planned on posting a link on how to make the perfect cup of tea but the articles were all at odds with each other (not to say unfit for my argument). I used to use full fat and my folks used to get it delivered. Regarding the cream, neither my brother, sister nor I ended up with it as blue tits would nick* it before we got to it.
Anyway, I will allow the brits to drink their tea the way they wish - even if it is wrong - but the Americans herein may not expect to be taken seriously regarding the alchemy required in brewing and serving tea. That right was forfeited the day they tried using Boston water to make it.
pH
*nick: to steal