I’ve made this hot pot many times this season, both for myself and many other people. And, many of them asked me to share the recipe so they can make it home. The miso broth has two kinds of miso for complexity. The addition of butter at the end gives the beautiful depth in flavor.
Ishikari Nabe is originally a regional dish from Hokkaido (the northern island of Japan), and to me, the must “rule” to be called Ishikari Nabe is that the dish has to have salmon and potato in the miso broth. They taste so good together (especially with the butter added at the end)! That being said, the broth can go well with just about anything, so you can change around the ingredients to cook in it. When I cook for my vegan friends, I use kombu and shiitake dashi, and make it with tofu and different kinds of mushrooms (and no butter).
You can make the miso base (mixture of the miso, sake, mirin and soy sauce) in advance, and when it’s ready to serve, you can simply combine the miso base with dashi, and start cooking the ingredients in it at the table (or at in the kitchen stove and serve at the table).
For “shime” (finishing course), I love making ojiya (soupy porridge) in the remaining broth. Ramen is also great, too.