Transfer to a sterilised jar and seal, or serve straight away. Just before serving, make the Melba toast. Preheat the grill to medium, toast the bread slices until pale golden-brown on both sides ...

Chill in the fridge for at least 5 hours or until firm. Serve in thick slices with the brown toast, lemon wedges and extra sprigs of watercress on the side.

Appetizer: Make this recipe using only 3 ingredients !