Twice shy

"An espresso long," he said.
"Ooo," I replied, "I don't know what that is."
He sighed. And, sort of, tutted. Enough to make me feel unworldly.
"It's a double espresso" (I think he may even have said "doppio" but I was concentrating hard so my inner Italian must've kicked in) "except you put water through the coffee twice.". He went on, slowly..."you ...push ...the ...double-espresso-button ....twice".

It felt wrong. But I did it.