Spoon a little on each blini and top with the feta and radish. To make the ginger and chilli prawn topping, mix the sweet chilli sauce and ginger in a bowl. Add the prawns and season with a little ...

In a small bowl, mix the onion with sour cream and lemon juice. Place 1 blini on each plate, spread it with 1 tablespoon of the sweet-onion sour cream, and pile the trout on top. Top with caviar.