I didn't realise Amorino was a worldwide chain (until just now). I happened to stumble across this gelataria in the middle of Lisbon's pedestrian street - which made the quality of this even more exciting given the convenience. I went twice in 2 days and even considered a third had I not been leaving town.
The process is simple - you pay for a cup, they fill it with as many flavours as you like. That's right - as many as you like. The other thing that hooked me was the presence of two different types of thick light brown pistachio flavours, one sweet and one more nutty. They are both good and I recommend them, amongst everything else. The nutty one is very intense and probably only can be eaten in small amounts, so much to my surprise I liked the sweet version more overall.
Sit outside, eat the gelato, watch people and the world walk by.