Vegan Seitan Gyro W- Cucumber Sauce

Ingredients

• 1 cup soy yogurt , unsweetened
• 1/2 large cucumber , peeled and grated
• 1 tablespoon lemon juice , fresh
• 1 teaspoon dried dill weed
• 1/2 teaspoon salt
• fresh ground pepper , to taste
• 1 teaspoon turbinado sugar ( to taste )
• 1 lb seitan , shaved into thin , bite-sized bits
• 1 tablespoon vegetable oil
• 2 garlic cloves , minced
• 1 teaspoon cumin
• 2 teaspoons oregano
• 1 pinch cinnamon
• 1 pinch nutmeg
• 1 pinch cayenne pepper
• salt
• freshly ground black pepper
• 2 small tomatoes , diced
• 1 onion , diced
• 3 cups lettuce , shredded
• 6 pieces pita bread , warmed