Wash the rabbit, dab dry and cut into eight pieces. Peel onions and cut them into slices. Wash tomatoes, cut into quarters or eighths. Peel garlic and chop finely. Clean, wash and cut the pepperoni into rings.
Heat the oil in a large frying pan. Fry the meat on all sides until golden brown. Season with salt and pepper. Add onions, tomatoes, garlic and pepperoni. Gradually deglaze with 1/8 litre white wine and 1/8 litre water, bring to the boil, cover and simmer for about one hour.
After half the cooking time, add the remaining wine and sage. Season again with salt and pepper. Fresh white bread tastes good with it.