Ramen Egg (Hanjuku / Ajitsuke Tamago)

Ingredients

• 1/2 Water
• 1/2 Soy Sauce
  Regular soy sauce is fine. I don't recommend using a fancy shoyu in your marinade
• 1/4 Sake
  Optional but recommended
• 1/4 Mirin
  If you have sake but no mirin, just double up the sake and add some sugar
•  Eggs
  However many you want to make