I was about to order caviar (I've never tasted it), but then I realized that this may simply mean "café" (or coffee shop) and Google Translate confirmed it. It's what the French call "un faux ami" (a false friend), meaning a word that sounds like something familiar but actually has a totally different meaning. I also realized that I already know quite a bit of Czech (after only 2 months) because I understood some Polish because it resembles Czech. E.g. coffee is "kava" in Czech.