This Miso butter is delicious when melted onto fish, chicken or steak (lots of umami); on asparagus, broccoli or carrots; drizzled on a baked sweet potato (or a regular baked potato).
Pork belly is a great inexpensive robata option, with its flavoursome strips of fat. I recommend using belly from free-range rare breeds with a simple yuzu miso topping to add umami and acidity simultaneously.