I like strong black tea. No sugar, no milk. Sometimes if I'm trying to cut back on the Pepsi Max I will drink big mugs of weak black tea with no sugar.
I don't mind some of the teas that have flowers or mint in them. Just as long as it isn't some chemically enhanced artificial flavour.
My mother used to joke that her father liked his tea like he liked his women, "strong and black". Political correctness wasn't really a thing back then.
I can't drink instant coffee black like Americans do. I mean I can, but it's not pleasant. I need a good dash of unsweetened almond milk or cashew milk or soy milk at a stretch. And no sugar. Cashew milk is the best but it's hard to find.