Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      pound         butter
   4      tablespoons   sesame seeds -- * see note
   2      tablespoons   sesame oil
   2      tablespoons   chopped scallions

Preparation:

Use softened unsalted butter. Mix ingredients in blender or by hand. Do not let butter melt. Roll up compound butter in plastic wrap and freeze until needed. When ready to grill, cut off a small pat for each portion of fish to be grilled.