Why do we use pumpkins at Halloween?

Apparently this came from Irish immigrants to the New World.
During Halloween back in Ireland they hollowed out turnips to create
"Jack O Lantern" but discovered that pumpkins were much
softer and therefore easier to carve.

Myth or truth? Whatever, pumpkins are much bigger and
more colorful than turnips.

And just who is Jack O Lantern?

Find out tomorrow.