Take out a mixing bowl. Place in Soy Sauce (1 Tablespoon), Mirim (1 Tablespoon), Minced Garlic (1 Tablespoon), Minced Ginger (½ teaspoon!), Salt (½ teaspoon!), Black Pepper (4-5 cracks). Then give it a good mix and let it marinate for at least 10 minutes.
In the meanwhile, crack one egg into a bowl. Then whisk it up.
After 10 minutes of marinating, place in ONLY ½ of the beaten eggs into the marinating chicken. Then give it another good mix.
Now, move the chicken into a plastic bag (or Ziploc Bag). Add in Potato Starch Powder (6 Tablespoons). Twist it shut and give it a thorough shake. We want to make sure that the potato starch gets evenly tossed over the chicken. After 2-3 minutes of tossing, the chicken should take on a light caramel color (reference video).