That's an interesting idea... thing to do would probably be to knock the underextracted puck and the shot into a french press with some cold water or some such and cold brew it overnight... certainly wouldn't want to drink nasty underextracted shots, even over ice with milk and sugar. The stuff that didn't get extracted is still in the puck, though...
29 minutes ago, weinoo said:Right. It's much easier for a coffee shop that's selling a hundred shots a day or more to toss a few.
I wonder, can the shitty shots be saved up for iced coffee?