Boil your eggs to your desired consistency. Boil for 7 minutes for a jammy center or 12 minutes for well done. Once boiled, remove from heat and add the eggs to an ice bath to firm up. Season the eggs. In a small mixing bowl, mix together the soy sauce, dark soy sauce and mirin. Add the peeled eggs into the bowl to marinate for at least 30 minutes, as you make your congee. The eggs can marinate for up to 3 days in the refrigerator. Wash