Prepare the ingredients: seaweed, rice, tuna, vegetables, pickled radish, etc.
Drain the tuna and mix it with mayonnaise.
Mix salt, sesame oil, and sesame seeds into the rice.
Spread the rice thinly over the seaweed sheet.
Place pickled radish, cucumber, carrot, imitation crab, and tuna mayo on top of the rice.
Carefully roll up the ingredients to make gimbap.
Slice into bite-sized pieces.