Misoyaki Cod

Ingredients:
4 black cod fillets
1/4 cup sake
1/4 cup mirin
4 tbsp white miso paste
3 tbsp sugar

Miso marinade:

1. Bring sake and mirin to a boil until alcohol evaporates, ~30 seconds
2. Turn heat to low and add miso paste, whisking until incorporated
3. Turn heat back to high and add sugar, whisking until dissolved (this step happens quickly)
4. Remove from heat and cool to room temperature