Clean the chicken by removing the skin, cutting it into smaller pieces, and rinsing it under water. Drain and pat dry.

Heat a pot and add sesame oil and cooking oil. Sauté minced garlic and the white part of the green onion until fragrant.

Add red pepper flakes to the pot and stir-fry briefly to release the aroma.

Add the chicken pieces to the pot and stir-fry until the surface of the chicken is cooked.

Pour in water and add soy sauce. Bring to a boil over high heat, then reduce to medium-low heat and simmer.

Slice the potato into 1 cm thick wedges and add to the pot.

Slice the onion into thick strips and add to the pot. Continue simmering.