Finely chop the onion.

Tuna Patties
This is Baek Jong-won's tuna patty recipe, made savory and delicious using canned tuna.
What You'll Need
Instructions
Finely chop the carrot to add color.
Finely chop the Cheongyang chili pepper to add spiciness.
Place the chopped onion, carrot, and chili pepper in a bowl, and add 0.5 or 1 tablespoon of minced garlic.
Add about 1/3 tablespoon of salt and a very small amount of sugar, then mix.
Add 1 tablespoon of sand lance fish sauce to enhance the savory flavor.
Add the drained canned tuna to the bowl and mix evenly with the other ingredients.
Crack 2 eggs into the bowl and mix.
Add 4 tablespoons of frying powder and mix the batter well with a spoon to adjust the consistency.
Grease a pan with cooking oil and preheat it.
Scoop the tuna batter with a spoon, place it in the pan, and fry into round shapes.
Cook until golden brown on both sides.
Serve the finished tuna patties with ketchup to taste.