Tenderstem broccoli is a hybrid of Chinese kale and broccoli which was first introduced in Japan in 1993. Chinese kale is a leafy brassica with long stems that it lent to the broccoli, resulting in a broccoli floret with a stem that is totally edible, even when raw.
Where it's from?
Farmford's Tenderstem Broccoli
(Depending on where it's in season throughout the year).