Chicken Skewers with Cilantro Mint Sauce

For the Chicken Skewers:

• ¼ cup lemon juice
• ¼ cup vegetable oil
• ¾ cup plain greek yogurt
• 4 cloves garlic finely chopped
• 2 teaspoons tomato paste
• 2 teaspoons red wine vinegar
• 1 ½ teaspoons salt
• 1 teaspoon dried oregano
• ¼ teaspoon paprika
• ¼ teaspoon ground black pepper
• ¼ teaspoon ground allspice
• 2 pounds skinless boneless chicken breasts - cut into 2 inch chunks

For the Cilantro Mint Sauce:

• 2 cups packed fresh cilantro
• 1 cup packed fresh mint leaves
• 1 shallot
• ¼ cup water
• 1 tablespoon fresh lime juice
• 1 teaspoon chopped serrano pepper
• 1 teaspoon sugar
• Kosher salt and freshly cracked pepper to taste

Extra:

• Pita Wedges optional
• tzatziki optional