The finished recipe. Greek Lamb Keftedes with Pitta and TzatzikiIngredients 1 to 6. 130 g Lamb mince, lean (Weighed raw.). 1 pitta, about 60 g Wholemeal pitta. 60 g Tzatziki. 80 g Cucumber. 100 g Tomato. 30 g Red onion (Half in the meatballs, grated, half sliced into the pitta.)Ingredients 7 to 10. A handful, chopped Fresh mint. 1 tsp Dried oregano. A squeeze Lemon juice. To taste SaltStep 1. Mix the lamb with the grated onion, mint, oregano and salt. Roll into eight small balls and flatten each slightly.Step 2. Grill on a rack under a hot grill for four minutes a side, so the fat drips away, until browned and firm.Step 3. Warm the pitta under the grill for the last minute. Split it, spread the tzatziki inside and fill with the keftedes, sliced cucumber, tomato and onion. Squeeze lemon over.