There are many reasons to love black cod — it is sustainably fished, full of healthy omega-3 fatty acids, and wonderfully buttery when cooked. This is one of the easiest recipes out there for the best taste! (Image credit: Anjali Prasertong) Ingredients: 1/4 cup sake 1/4 cup mirin 4 tablespoons white miso paste 1 tablespoons sugar (if you need the sweetness) I don't use the sugar myself 4 black cod fillets, about 1/2 pound each Make the four-ingredient miso marinade and then marinate the…