Cut 1 carrot and 1 black radish into matchsticks. Roll up a few pieces of each in 1/2-inch-wide strips of smoked salmon. Wrap thin strips of nori (seaweed sheets, found in the Asian-food section) around the salmon, moistening with wasabi or mayonnaise to seal. For dipping, mix 1/4 cup soy sauce with 2 teaspoons each orange juice and water, and some orange zest.
Photograph by Levi Brown