Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     3/4  cup           thinly sliced fresh mushrooms
     1/4  cup           thinly sliced green onion
   1      clove         garlic -- minced
   2      teaspoons     butter or margarine
   1 1/2  pounds        lean ground pork
   1      teaspoon      Dijon-style mustard
   1      teaspoon      Worcestershire sauce
     1/4  teaspoon      salt
     1/8  teaspoon      freshly ground pepper

Preparation:

In skillet, sauté mushrooms, onion and garlic in butter until tender, about 2 minutes; set aside. Combine ground pork, mustard, Worcestershire sauce, salt and pepper; mix well. Shape into 12 patties, about 4 inches in diameter. Spoon mushrooms mixture onto center of 6 patties. Spread to within 1/2 inch of edge. Top with the remaining 6 patties; seal edges. Place patties on grill about 6 inches over medium coals. Grill 10-15 minutes, turning once. Serve on buns, if desired.