Suddenly felt compelled to say that if you're writing a fic set in Italy with Italian characters and have them take coffee this is the size of the "coffee mug" they are drinking from:
(hand for reference)
And it is usually filled with an espresso shot, as you can see in the below pic. The espresso made by a coffee machine is the also the amount you see in the pic. you can drink it in one or two sips at most
Otherwise you can fill the cup with your own moka coffee, and then it can be the amount that you want. usually its around half the cup, but those that take a lot of coffee at once may also fill it to the brim:
Drinking americanos is usually uncommon and those that do usually receive one weird look and some questioning.
drinking one whole 5-poeple-moka alone is generally less weird than drinking "mud water". people would be concerned about your caffeine intake, not about the functionality of your taste buds.












