Chicken and some vegetables in a gelatinised broth. There are tons of variations since you can put basically everything in it, and this one looks actually good, i seen much worse. It's often eaten with vinegar. Large amounts of vodka optional, but when served as small portion with two glasses of vodka (per person) it's known as "lorneta z meduzą" (binoculars with jellyfish).

One of the ways the Soviet Union used to torture Nazis in gulags until it was banned by the Geneva convention