Cut the aged kimchi and other ingredients into appropriate sizes.
Add perilla oil to a heated pan and stir-fry the aged kimchi.
Add tuna to the pan and stir-fry together until the moisture evaporates.
Beat the eggs and scramble them.
Place a sheet of seaweed on a bamboo mat and spread a thin layer of cauliflower rice.
Add the stir-fried aged kimchi with tuna, scrambled eggs, cucumber, and avocado on top.
Roll tightly to form the kimbap.
Cut into bite-sized pieces.