To make the Marination Sauce:
Two methods, either (a) or (b)
(a)
2 cup water (boiled water that has been cooled to room temperature)
1/2 cup soy sauce
1/2 tbsp brown sugar / white sugar, to taste
Combine the water, soy sauce and brown sugar. Mix well and ensure that the brown sugar has been dissolved before adding in 1 slice of ginger. You can add other ingredients such as spring onion, seasame oil, anything to your liking. Also, change the proportion of soy sauce, water, sugar to suit taste.
(b)
1 cup water (boiled water that has been cooled to room temperature)
1 cup sake
1/2 cup mirin
1/2 cup soy sauce
1/2 tbsp brown sugar / white sugar, to taste
Combine the water, sake, mirin, soy sauce and brown sugar. Mix well and ensure that the brown sugar has dissolved. You can add other ingredients such as spring onion, seasame oil, anything to your liking. Also, change the proportion of soy sauce, water, mirin, sake, sugar to suit taste.