Earlier quoted context omitted.
I used to drink that much coffee. I got an espresso machine and started making americanos instead now I’m good with one cup a day. I don’t know what it is, clearly the caffeine is either higher or more bioavailabile or something, but it just sates my appetite for coffee. (Actually i started making cappucinos first and stopped when i started putting on weight from them lol)
I don't think you're using units that could allow anyone to detect whether it's caffeine quantity or bioavailability that's at play. It depends on how you dose your espresso and drip coffee. I don't drink espresso but I think people are dosing something like 20 grams per shot, whereas for pourover they're dosing 18 grams of water per gram of coffee. For a standard "coffee cup" (which is 5 ounces of water that results…
Yes. Or more to the point, all of them are; not least because of the existence of all the others.
I know it's rarely going to actually matter that much even when I try to follow a recipe (which to the letter and quantity at least, I generally don't) whether '1 cup' is US legal, Imperial (UK but not common), metric, Canadian, US customary, or any of the other country variations, but it's still infuriating!
I resisted owning any at all for a long time, but eventually gave in thinking it would be a handy way of having volumetric 1:1 ratios if nothing else (e.g. as much tomato as onion) and double as 'a cup' for following American recipes. But which 'cup' did I get? (Bought in the UK.) Nuts. I then realised I already had cup marks on a glass measure (that I'd only used ex ante for millilitres, like a sane person) - sure enough, different 'cup'.