Scyros (Pita Sandwich)
Ingredients:
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½ cup plain yogurt
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½ cucumber - peeled, seeded and finely chopped
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½ teaspoon chopped fresh dill, or to taste
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2 tablespoons olive oil
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3 large cloves garlic, minced
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1 large red onion, thinly sliced
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1 pound ground beef
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1 pinch dried oregano, or to taste
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2 stalks celery, chopped
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1 bunch fresh spinach, cleaned and stemmed
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½ cup sliced fresh mushrooms
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5 pita breads, warmed
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½ cup banana pepper rings
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2 tomatoes, cut into wedges