Oatmeal Tuna Rice Balls

Soak the oatmeal in lukewarm water for 5 minutes.

Drain the tuna using a sieve to remove the oil.

Mix the oatmeal with tuna, chopped onion, chopped cucumber, salt, and pepper.

Shape the mixture into bite-sized balls.

Place on parchment paper and sprinkle with black sesame seeds if desired.