Drain the corn. Roughly chop the corn with a hand blender in a tall mixing bowl. Mix with horseradish and cream cheese, season to taste with salt. Wash and clean the bell peppers and cut into thin strips.
1 Place the nori leaf crosswise on the sushi mat with the rough side up. Spread half of the corn mix on top, leaving approx. 2 cm free at the top edge. Spread half the paprika and half the roast beef on the lower half of the corn mix. Roll up firmly from front to back using the bamboo mat. Moisten the upper edge of the leaves and stick to the roll. Form 1 more roll in this way. Keep rolls cold for about 10 minutes.
Cut sushi rolls into 4 pieces. Serve with wasabi and soy sauce. Sprinkle with sesame and cress as desired.