In a large bowl, combine the ground beef or lamb with grated onion, minced garlic, yogurt, tomato paste, olive oil, and spices including cumin and paprika. Mix thoroughly using your hands until the mixture is sticky and well-blended. This should take about 5-7 minutes.

Divide the meat mixture into equal parts for easier handling. Place one portion between two sheets of parchment paper, then use a rolling pin to flatten it into a thin rectangle, about 1/2 inch thick.

Carefully remove the top sheet of parchment and begin rolling the flattened meat sheet tightly from one end to the other, forming a log shape.

Preheat your oven to 200°C (400°F). Place the rolled meat log on a baking sheet lined with parchment paper and bake for 20-25 minutes. Keep an eye on it; the meat should be tender and firm to the touch.

Once fully baked, remove the log from the oven and let it rest for 5 minutes. Using a sharp knife, slice the log thinly and serve in warm pita or tortilla wraps with fresh veggies.