1/2 cup sour cream
1/2 cup plain low-fat yogurt
1/2 cup cucumber, peeled, grated and squeezed as dry as possible
2 teaspoons red or rice wine vinegar
2 garlic cloves, minced
1/2 teaspoon Salt and pepper, to taste
4 large pitas
2 tablespoons olive oil
1 large onion, peeled, halved and cut into chunky wedges
3 cups leftover roast turkey, pulled into bite-sized pieces
1 teaspoon oregano
1 1/2 cups shredded lettuce (preferably romaine)
1 cup cherry tomatoes, halved and lightly salted