I've been trying a Keurig K-Cafe, which includes a "Shot" feature that slowly produces what looks like a shot of espresso from a regular ("coffee") K-cup. What is the machine doing to produce that, and is the resulting liquid comparable to "real" espresso?
(I'm not enough of a connoisseur to tell the difference between straight espresso and these K-Cafe Shots. I understand that "real" espresso is made by passing water through the grounds under high pressure. I can't see that the K-Cafe has a mechanism to accomplish that.)