Peel the vegetable onion and garlic cloves. Wash and clean the peppers. Dice everything finely. Wash and coarsely dice the beef tomatoes, remove the seeds from the peppers, wash and cut into thin rings. Fry onion and garlic in olive oil until translucent.
Briefly steam the peppers and pepperoni. Add tomatoes, sugar, salt and 5 tablespoons white wine vinegar. Bring to the boil and simmer open for about 20 minutes. Season to taste with salt and pepper. Pour immediately into prepared twist-off glasses.
Close jars, allow to cool upside down.
Goes well with grilled meat and in goulash, for example. Shelf life in the refrigerator: 4-6 weeks.