Step 1: Whisk the miso, mayonnaise, sugar, lemon zest, and white pepper (if desired) in a bowl CEDAR-PLANKED SALMON WITH MISO GLAZE, CONTINUED until smooth. (If the miso is particularly stiff, as some brands are, thin it a bit with 1 to 2 tablespoons of warm water, sake, or mirin.)
Step 2: Notes: Individual cedar planks are often sold where grilling supplies are sold, or they are available from www.grilling4all.com . If using planks from a lumberyard, make sure they are untreated. White miso is available in Asian markets and in the ethnic section of some supermarkets, or you can purchase it on-line from www.asianfoodgrocer.com, phone 888.482.2742.