Instructions: Called tzatziki in Greece, this yogurt sauce can also be used on a baked potato as a nonfat alternative to sour cream. To prevent the pita bread in this recipe from getting soggy, place the trimmed portion of the bread down into the pocket to act as a sponge for the lamb drippings and yogurt.

Mix first 5 ingredients together in medium bowl. Season yogurt sauce to taste with salt and pepper.

Mix lamb and next 5 ingredients in large bowl until well blended. Season generously with salt and pepper. Shape mixture into four 3/4-inch-thick patties.

Preheat broiler. Place lamb patties on broiler rack and broil until cooked through, about 4 minutes per side.

Open pita bread rounds; line bottoms with trimmed tops, if desired. Place lettuce, burger, then large spoonful of yogurt sauce in each round. Serve, passing sauce separately.

4 Servings

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