It's one of the ways to call the big onion or egg onion. It is also called spring onion, shallot, charlotte, shallot or scaloña. It is widely used for stews and making salads. Its scientific name is Allium ascalonicum.
ECHALOTE Allium ascalonicum , in Chile shallot, vegetables of the aliace family, originating in Central Asia. It is a small onion about 2 to 3 cm in diameter, with very pleasant flavor, which is cooked whole.