The text says "kotlety" which are basically meatballs:https://en.wikipedia.org/wiki/Cutlet#Cuisines_of_Russia,_Ukr.... But I don't understand what I'm looking at either. Maybe it's the ground meat mix that you shape the cutlets yourself before frying? But what is the bread-looking half on the left side?

The right side is almost certainly buckwheat, known to Russians simply as “kasha.”

The left side is likely the cutlets themselves (the little brown outlines) surrounded by some (cold) white sauce that once heated turns more liquid.

It is buckwheat, known to Russians as “Grechka”. It is quite nice, goes well with meat or even mixed with milk. The white substance is most likely fat.

Haha I forgot we called it grechka. Technically grechnevaya kasha, but colloquially called either grechka or kasha; my grandpa was obsessed with it lol, so we just always called it “ne vkusnaya kasha” aka “not tasty porridge” lol

From visuals it looks like buckwheat with possibly two cutlets under bechamel sauce