Mini Greek Lamb Burgers

Another recipe for ethnic sliders-not sure where we got this but it is great.

Tzatziki:

1/2 English cucumber, peeled, seeded, and grated (3/4 cup)
1/2 cup plain yogurt, preferably whole milk yogurt
2 teaspoons fresh lemon juice
2 teaspoons chopped fresh mint
1 small garlic clove, minced
Salt and pepper

Lamb Burgers:

1 1/2 pounds ground lamb
1/2 small onion, minced (1/4 cup)
1/4 cup chopped fresh parsley
2 teaspoons chopped fresh oregano, or 1 teaspoon dried
Salt and pepper
4 pieces pita bread (6 inches each)
Iceberg lettuce, for serving
2 medium beefsteak tomatoes, sliced, for serving

Heat grill or grill pan to high. Make tzatziki: In a medium bowl, combine cucumber, yogurt, lemon juice, mint and garlic; season with salt and pepper. Cover, and refrigerate until ready to use.
Make burgers: In a medium bowl, use a fork to gently combine lamb, onion, parsley, and oregano; season with salt and pepper. Gently form mixture into 16 small patties, about 3/4 inch thick. Grill until medium-rare, 2 to 3 minutes per side.
To serve, warm pitas on the grill or directly over a gas burner, turning occasionally. Halve pitas, and fill with lettuce, burgers, tomato, and tzatziki.

Serves 4. Great with Greek Pasta Salad