I went over the border to Germany this morning and went to Tchibo, a German chain.
They were giving free coffees to sample their new Costa Rica (100% Arrabiata) coffee. They were making it in one of their machines which was pushing way too much water through it. Tasted horribly bitter and bland. I would have thought a coffee shop like Tchibo would at least program the machine correctly.
As an aside, their "Espresso Sizilianer Art" (80% Arrabiata 20% Robusta) makes good espressos for a shop-brand, especially when milk is added.
Perhaps they do not train their people properly; perhaps they do not look after (as in clean) the machine properly.
The reason I mention this is that, a decade or so ago, I knew a very talented, enthusiastic (and vastly experienced) Italian chap who worked in one of those new, hip, uber-cool coffee shops.
He was stupefied at the extraordinary sums of money investors (and others) were prepared to put into setting up such coffee shops; they wanted for nothing re equipment, (tens of thousands spent on such stuff), gorgeous crockery, and (sometimes, especially in the eary days) great coffee.
Yet, - to his amazement - they spent (or invested) next to nothing in terms of (serious, professional) staff training, for they didn't see it as relevant or necessary.
Almost invariably, they would receive terrific (initial) reviews, yet within six months, the coffee they served was unspeakably vile, and you wondered about your own palate, your unreliable memory, and the glowing reviews you had read.
The Italian explained to me that this was because - very often - the staff had not been trained to do such (deceptively simple) stuff such as clean those outrageously expensive (and utterly gorgeous) espresso machines, which meant that there was often a build up, of, for example, stale coffee, and oils, in the guts of the machine.
In Italy, he pointed out, everyone was trained properly - for, this was seen as a proper profession, and proper training meant professional standards maintained, not least in ensuring that the machines were spotless, which, in turn, could guarantee consistently high standards.