Wash the cucumber, dab dry and cut into 12 thick slices. Clean, wash and drain the salad. Whip cream until stiff, stir in horseradish. Cut salmon into small slices.
Cover the cucumber slices with some salad and salmon. Put the creamed horseradish in a piping bag with a star-shaped spout and squirt on the canapés. Garnish with lemon wedges and dill. Makes 12 pieces.