Frozen Fish with Quick-Pickled Radishes

Fishing is a national pastime throughout the Baltics, with various fish festivals held across the region. Greta, a Lithuanian foodie friend I met through Instagram who lives in London, told me about a festival she remembered from her childhood in Klaipėda that celebrated ‘little fish that taste like cucumber when they’re cooked’.

Frozen fish is said to have originated in the north of Russia and I would go as far as to call it the Eastern European sashimi — and, as w