The butter thing is called "Bulletproof coffee", it allows you to take a massive caffeine dose that gets ingested slowly so you don't get a huge caffeine hit, the fats in the butter bind with the caffeine and absorb slower.
Another thing...... the only way to make coffee is with a moka pot, anything less is an insult, especially the 'filter' stuff Americans make, eww. Probably the most versatile way too, from stove top to a camp fire, no faff, just perfect coffee.
Sorry, i'm one of
those people, i've brewed coffee in every possible manner, even to the extent of buying green beans and roasting them myself.
So my recommendations :-
Bialetti Moka pot
View attachment 86776And a special coffee to go in it would be "Mexican Finca Muxbal" a single origin bean only grown in one place has a beautiful caramelly butteryness to it, i use a full 6 cup pot to 1 large latte