Viral Doner Kebab

Name: Viral Doner Kebab
Ingredients: 1 lb ground beef (80/20 or 85/15 for juicier, more flavorful doner); 1 onion (grated and squeezed to remove excess liquid); 3 garlic cloves (minced); 1 tsp paprika; 1 tsp oregano; 1 tsp salt (or more to taste); 1 tsp black pepper; 3 tomatoes (large); 2 long green peppers (Turkish sivri or banana peppers); 1/2 cup mayonnaise; 1/3 cup sour cream (or Greek yogurt); 3–4 garlic cloves (minced); 1/4 tsp black pepper; Salt (to taste); 2–4 tbsp water (to thin, optional); 1 red onion (thinly sliced); 1 tbsp sumac; 1 tbsp parsley (minced); 2 tbsp olive oil; Juice of 1 lemon