Prepare the meat
Combine the soy sour cream, 1/4 cup water, the lemon juice, vinegar, olive oil, onions, and garlic in a large bowl. Whisk in the salt, pepper, cumin, nutmeg, cloves, and cayenne. Add the lamb strips and toss to coat.
Cover the bowl with plastic wrap and marinate in the refrigerator for 12 to 24 hours (the longer you allow the meat to marinate, the more tender and flavorful it will be).
Make the salsa
While the meat is marinating, prepare the salsa for serving and keep covered at room temperature for up to 2 hours (or refrigerate if making more than 2 hours ahead). Mix all of the ingredients in a medium bowl. Season to taste with salt and pepper.
Finish the dish
Heat a large skillet over high heat. Drain the marinade off the lamb and cook the lamb strips in a single layer in batches until the meat has browned and cooked through, about 5 minutes. (The lamb will give off liquid as it cooks, so let it cook until the liquid is absorbed and the meat is brown.) Transfer the cooked lamb to a plate and cover to keep warm.
Arrange the lamb strips on a platter, top with pomegranate–mint salsa, and serve.
Nutrition information per serving (based on 8 servings): Calories: 555.7, Total Fat: 28g, Cholesterol: 185.4mg, Sodium: 199mg, Total Carbohydrates: 13.7g, Dietary Fiber: 3.3g, Sugars: 7.2g, Protein: 67.9g