Have no devices, or need no devices, other than an electric kettle for the boiling water. Needs to be kept simple and quick. I actually had to look up what I am drinking, it is Nescafe Gold decaff instant coffee, and Nescafe Gold Cappuccino, with caffein. The decaff I drink sugarless, the caff has sugar in it, but I water it down, so it does no harm. Same at work.
I try to avoid dairy, but there are certain coffees that I seem to tolerate, one is a local bakery chain, the other is a tobacco shop chain. That's for on the speedy go go go. They are premixed with some minor sugar quantity.
Drive in, McDonalds, decaff oat drink, and iced decaff oat drink...no sugar. My boyfriend likes a regular coffe with milk and a little bit of sugar.
My parents, mentioned in another thread, do still prepare an old traditional Turkish coffee, which foams beautifully on top. I do remember being taught, as a little girl, how to properly prepare it. The roast, whatever they buy , most likely a local brand featuring assumingly Arabica preground coffee meant to be 'cooked' this way.
The going out bar machine coffees, which are immensely popular localy, are usually too bitter or too sour for me, and not all the shops would offer plant based milk. So I opt for a juice or tea, depending on the season...or a Nescafe

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An elaborate post from me, minus the expertise


...there were periods in life when I did not drink coffee. Interestingly so.
Currently I hope to descale from 3 a day to 2 a day, which is fine, as long as I don't work...and perhaps even 1 a day, unlikely, but let's see.