Creating Korean Marinated Eggs is straightforward if you follow these steps:

1. Boil the Eggs: Fill a pot with water and bring it to a boil. Gently add the eggs and boil for 6-7 minutes for a slightly soft center or 9-10 minutes for hard-boiled eggs.
2. Cool the Eggs: Once cooked, transfer the eggs to an ice bath for about 5-10 minutes to stop the cooking process.
3. Peel the Eggs: Carefully peel the cooled eggs and set them aside.
4. Prepare the Marinade: In a bowl, combine soy sauce, water, sugar, rice vinegar, minced garlic, sesame oil, and chili flakes (if using). Stir until the sugar dissolves.
5. Marinate the Eggs: Place the peeled eggs in a container and pour the marinade over them, ensuring they are fully submerged. Seal the container.
6. Refrigerate: Allow the eggs to marinate in the refrigerator for at least 4 hours, but overnight is recommended for the best flavor.
7. Garnish: When ready to serve, remove the eggs from the marinade. Slice them in half and garnish with chopped green onions and sesame seeds.

By following these steps, you’ll have perfectly marinated eggs that are bursting with flavor!