- Cook rice according to package directions and cool until just warm. Cut nori sheet in half lengthwise. Place 1 sheet of nori on a piece of plastic wrap on a sushi mat with the smooth side facing down. Scoop approximately ¾ cup of sushi rice on nori and press to evenly cover nori using damp fingertips. Sprinkle rice with ½ teaspoon of toasted sesame seeds and gently flip nori so the rice is now facing down.
- Place a few slices of smoked salmon, cucumber, shredded cabbage, and cilantro in a row in the center of nori.
- Use fingertips to tuck ingredients in as you roll the sushi mat away from you. Continue to roll firmly until a log is formed. Use the plastic wrap to firmly seal the seam of the sushi roll. Wrap firmly in plastic wrap and refrigerate to chill for 20 minutes. Repeat with remaining ingredients to create a second roll.
- While rolls chill, stir together ingredients for sriracha mayonnaise in a small bowl. Transfer to a small sandwich bag and cut off the tip. Remove plastic wrap and slice sushi rolls into 8 slices. Drizzle with sriracha mayonnaise and serve right away with soy sauce for dipping.