Insalata Russa

The dish belongs to a 19th-century European family of bound vegetable salads. The most cited origin credits Lucien Olivier, a Moscow chef of likely Belgian descent, who around the 1860s served a luxurious version at his Hermitage restaurant — in Russia it is still called «Olivier salad». Piedmont claims the dish as its own by long tradition, and in France the same preparation is known as «salade piémontaise»; the local story that it was prepared in Turin for visiting Russian aristocracy is repeated but undocumented. In Italy it was printed in the 1868 cookbook «Il re dei cuochi» and later by Pellegrino Artusi in his 1891 La scienza in cucina, by which time the modern vegetable-and-mayonnaise form had largely replaced Olivier's meat-rich original.

Cold and creamy, with the vegetables yielding to a soft, even bite — never crunchy, never mushy. The diced potato and carrot are tender and a touch sweet, the peas pop faintly, all knit together by a rich, faintly tart mayonnaise. Pickles and capers cut through with sharp, briny flecks; a little tuna, when used, deepens it with savoury weight. It should taste clean and balanced, the lemon keeping the egg-yolk richness in check; a sloppy version turns greasy, with watery vegetables bleeding into the dressing.

The dish stands or falls on the mayonnaise, which is an emulsion: egg yolk supplies lecithin, a natural emulsifier that lets oil be whisked into microscopic droplets suspended in the lemon juice and yolk, giving a thick, stable cream. Add the oil too fast and the emulsion breaks into a greasy split. The vegetables must be boiled separately to the right doneness and, crucially, drained and cooled dry — surface water would thin the mayonnaise and slacken the salad. Cutting everything into small, uniform dice gives an even texture and lets each forkful carry vegetable, pea and dressing together; chilling for an hour lets the flavours marry and firms the dome for slicing.