Finding white miso paste proved a bit challenging, at first. I searched the web and discovered it is also labeled as sweet or mellow. Speciality and health food stores carried several types.
You can find the recipe in the latest Cook's Illustrated issue on stands now, along with recipes for Spicy Hoisin, Honey Mustard and Coconut Curry Glaze. I attached a link to the video, the full Cook's Illustrated recipe library may require access.