This is a lovely, fiery variation on my favourite weeknight dinner, namely “any fish topped with harissa”. Hake is my new go-to white fish: it’s sustainable, it has a lovely texture, it roasts beautifully and it’s the perfect foil for a spicy topping. My sambal pays homage to the Indonesian versions made with tomatoes and chilli – it starts off as a light, fresh sauce that cooks down beautifully with the fish and tomatoes.