Tropea

The red onion from Tropea, Italy, (Italian: "Cipolla Rossa di Tropea") grows in a small area of Calabria in southern Italy, Capo Vaticano, near the city of Tropea.^[6] This onion has a stronger and sweeter aroma and the inner part is juicier and whiter than other red onions and it is possible to make a jam with it. In July 2007, the European Union registered the Protected geographical indication mark for the red onions produced in this particular area in Italy.^[7]

Turda

The red onion from Turda (Cluj County,^[8] Central Romania) (Romanian: "Ceapa de Turda",^[9]) is a local variety of red onion with light sweeter taste and particular aroma. The area of cultivation encompass the lower Arieș valley and the middle Mureș valley.^{[citation needed]}

Turda onion bulbs are traditionally intertwined into long strings (1–2 m) for marketing purposes and can be found at the traditional markets all over central Romania. "Turda Red Onion" is usually served fresh, as a salad or part of mixed salads and especially as a compulsory garnish for the traditional bean-and-smoked ham soups.^{[citation needed]}

Wethersfield

In the United States, one of the most prominent cultivars of red onion was grown in Wethersfield, Connecticut, and was a major source of onions for New England until the late 1800s.^[10][11]