Borettane onions are well-known for their wonderful taste. Their name comes from Boretto, a municipality in the Reggio Emilia province, where they were grown as far back as six centuries ago. Their shape, a small and golden flattened bulb is characteristic, and with their sour, yet very sweet taste, they are appreciated either pickled in vinegar or sweet and sour. The onions are pure white and juicy, excellent for preserves.