Kulebyaka

A 17th-century boyar-table dish, originally peasant kulebyaka with cabbage and onion that was scaled up for nobility with salmon and sturgeon. The name and dish entered French cuisine through late-19th-century Franco-Russian culinary exchange; the French chef Auguste Escoffier published recipes for coulibiac in the early 20th century, establishing it as a French restaurant standard. The Russian original is almost extinct outside of holiday tables; the French version is what most cookbooks document.

A 17th-century boyar pie that French chef Marie-Antoine Carême took back to Paris after his 1819 visit to Tsar Alexander I — it became coulibiac in French restaurants. The crêpe layer (blinchik) between dough and salmon is the engineering trick keeping the bottom from going pasty.

A long loaf-shaped pie, a brick of brioche-rich yeast dough wrapped around concentric layers: rice or buckwheat on the bottom, then mushrooms, then chopped hard-boiled egg, then a whole side of salmon or sturgeon brushed with butter, sometimes a layer of vyaziga (dried sturgeon notochord/dorsal cord). Sliced crosswise to show the strata. Served with melted butter poured over the cut. A Russian feast-day dish, not weekday food.

The crêpe layer between dough and filling is the engineering trick — a single thin pancake (blinchik) wraps the wet ingredients to keep moisture from soaking the dough. Skip the crêpe and the bottom crust goes pasty within an hour. Vyaziga, when used, is the load-bearing umami: the gelatinous dried spinal cord absorbs juices and binds the layers. Modern versions substitute it with extra mushroom or skip it entirely.