Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2 2/3  pounds        lean ground beef
     1/4  cup           sour cream
   1      tablespoon    minced fresh thyme or 1 tsp -- dried
   1      tablespoon    minced fresh parsley
   1      teaspoon      minced fresh rosemary or
     1/4  teaspoon      dried -- crumbled
     3/4  teaspoon      pepper

Preparation:

Thoroughly combine first 6 ingredients in medium bowl. Shape beef mixture into 8 1-inch thick patties. Cover and chill at least 1 hour or up to 8 hours. Prepare barbecue (medium-high heat). Place burgers on grill. Cover grill and cook burgers to desired doneness, about 4 minutes for medium rare. Source: Bon Appetit, July 1992 Note: Nonfat yogurt works as well as sour cream, makes the flavor tangier.