Things they like that Americans find abhorrent:
Herring "in a fur coat" ("Seld' pod shuboi" - A dish with a herring base, covered with a kind of beet salad)
Pork fat (salo) - by its lonesome (it's technically Ukranian, but popular in Russia, too)
Vobla - a kind of dried fish - a carp variant called "Caspian roach", which does nothing positive to appetize us, whose meat is ripped right off the skeleton to munch with beer.
Jellied meat - basically a meat-based jello (studen', holodyets)
and rassol' (pickle juice), which they use as an Alka-Seltzer-like hangover cure
Other things in their menu are great, although their salads are typically much heavier than ours, but 99% of our people find the items listed above intolerable.