If you’re not familiar with broccolini, it’s like tall gangly broccoli with little florets on top. Some people think it’s baby broccoli, or immature broccoli, or broccoli rabe — but it’s not. It’s a hybrid of broccoli and Chinese broccoli that inherited the florets from broccoli and long, tender stems from Chinese broccoli.  Broccolini is sweeter than broccoli and has a mild flavor. It’s not bitter at all and the long stems taste a little like asparagus.