Serve this sauce with the Mediterranean Chicken Lettuce Wrap Tacos from The Cheesecake Factory.
Place cucumbers in a large bowl and season with salt; toss to combine. Let stand for 15 minutes. Transfer to a colander to drain off all liquid from cucumbers. Pat dry and set aside.
Meanwhile, in a large bowl, mix together yogurt and sour cream until well combined. Stir in mint, sugar, and garlic powder. Add cucumbers, cilantro, and scallions; season with a pinch of salt and pepper; gently fold to combine. Keep refrigerated until ready to use.