This section is from the book "The Gardener V3", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
We have just had the opportunity of testing, by cooking, the qualities of this new vegetable. It is a true hybrid, and was obtained from a cross between the Brussels Sprout and M'Ewen's dwarf Cabbage. In habit of growth it resembles the Brussels Sprout; but the sprouts are larger, longer, and densely produced. The leaves are like those of the Brussels Sprout in appearance, and in the head they assume a somewhat elongated form not unlike the Sugarloaf Cabbage. It is a delicious tender vegetable when cooked, and, if it proves to be hardy, is fit to rank high among our best esteemed winter vegetables. With such a parentage it cannot fail to be hardy.