Herring with potatoes
This is the simplest and best-loved Russian zakuska, on every table from a Moscow kitchen to a Siberian railway compartment: fillets of salted herring with steaming boiled potatoes, rings of raw onion, dill and a drizzle of unrefined sunflower oil that smells of toasted seeds. The contrast of cold, silky fish and hot, floury potato is the whole point, and black bread goes alongside. Salted herring is cured but not cooked, so buy ready-salted fillets from a good fishmonger or deli (made from previously frozen fish), keep them in the fridge, and note that it is not for pregnant women, young children or anyone with a weakened immune system. A common mistake is serving the herring straight from very salty brine; taste it and soak it in milk or cold water first if needed. Chef's tip: use unrefined sunflower oil, its nutty smell is what makes the dish.



