Fish with Miso Glaze

Fish - halibut, salmon etc
1 tbsp soy sauce
1/2 cup sake
Honey
1/2 cup water
1 tbp miso paste
1 tbsp sugar
Mustard to take

In a shallow pan, combine soy sauce, sake, honey and water and bring to a boil, reduce
Add fish and cover pan, simmer for 10 mins basting occasionally
Mix miso paste with water, dash of sake, honey and sugar
Add this sauce to the pan and simmer for 3 more minutes
Serve with gailan