We are dialing espresso almost every day, therefore we know what kind of espresso cup is good.
First, it has to be transparent, because we want to see how it's crema. Too much crema we know it is too fresh and we might want to rest it longer.
2nd, small but wide enough. Your usual espresso cup may be too small to swirl, this cup wide enough for your to swirl and try it.
Finally, we know it has to be affordable.
There you go, Home Barista