Peel and chop the onion. Wash parsley, dab dry and chop coarsely. Drain tuna and capers, put aside about 1/3 of the capers. Mix the rest with the sour cream, tuna, onion and parsley in the universal chopper to form a cream. Add pepper and possibly sal
Wash the peppers and cut them into fine cubes. Cut out circles (approx. 5 cm Ø) from white bread and cold cuts. Pour cream into a piping bag with perforated nozzle. Cover half of the bread with roast beef, the other half with turkey breast. Spray about 3/4 of the cream on half of the bread circles.
Sprinkle with remaining capers and about 1/4 of the paprika. Place the remaining bread circles on top according to the cutout and press them down a little. Garnish with the rest of the cream and sprinkle with the remaining paprika. Cut caper apples in half if necessary and garnish Smushi with them