My mom makes miso every year and this is one of the first things that we make with her miso. The recipe (with a variety of differences) is readily available, but I tend to go with the most simple versions of things, so this is what we use. The grilling/broiling instructions are a bit vague, but grills are different enough that the operator should use whatever method they think is most reasonable, just keep an eye on it to make sure it doesn't burn. Burnt miso is not a good thing. Prep time includes marinating time.