Wash the cucumber, dab dry and grate coarsely. Season with salt and drain. Peel garlic and chop finely. Wash mint, dab dry and cut into fine strips. Stir yoghurt with cucumber, garlic and mint until smooth.
Season with cayenne pepper. Knead minced meat with chili con carne fix, mineral water and herbs. Season with salt. With moistened hands form approx. 40 g heavy meatballs. Put 4 on each skewer. Heat 1 tablespoon of oil in a frying pan and fry the skewers for about 10 minutes at medium heat, turning them over. In the meantime, clean, wash and slice the tomatoes. Peel and finely chop the onion. Season vinegar with salt and pepper. Beat the remaining oil into the vinegar.
In the meantime, clean, wash and slice the tomatoes. Peel and finely chop the onion. Season vinegar with salt and pepper. Beat the remaining oil into the vinegar. Marinate the tomatoes and onion with the vinaigrette. Arrange skewers with tomato salad on a plate, garnish with some lettuce leaves and pepperoni. Serve yoghurt sauce extra