Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/2  cup           Dijon mustard
   2      tablespoons   dry mustard
   2      tablespoons   vegetable oil
     1/4  cup           dry white wine
   2      tablespoons   dried tarragon
   2      tablespoons   dried thyme
   2      tablespoons   dried sage -- crushed

Preparation:

Mix all of the ingredients in a bowl. Let stand 1 hour. Add chicken and coat well. Let chicken sit in marinade 3-4 hours. Pat dry with paper towels. Use the remaining marinade to baste chicken just before removing from the grill. Source: Mesquite Cookery by John "Boog" Powell