Slice cucumber and pickled radish into thin strips.
Beat eggs, cook into a thin omelet, then slice.
Drain oil from the tuna can and mix with mayonnaise, salt, and pepper.
Place seaweed on the sushi mat and spread blanched cauliflower rice thinly.
Add filling ingredients (tuna, cucumber, pickled radish, egg omelet, avocado).
Roll the gimbap tightly while pressing it firmly.
Cut into bite-sized pieces.