Cod and Popcorn Gratin

Lift a family-style gratin out of the everyday and into extraordinary territory with the addition of wasabi, for some fresh clean heat. For an added level of excitement, I have played on the corn flavours here and added some buttery toasty popcorn on top. Ideally it needs to be eaten on the day it is made, as the popcorn topping does go soggy in the refrigerator, although it still tastes nice. For an easy life, use a bag of shop-bought salted popcorn if you don’t want the extra step of popp