While commonly categorized as a plum, Denniston's Superb exhibits clear ties to the Reine Claude group, commonly referred to as gages. Historical classifications have acknowledged this connection, positioning it as a plum akin to gages. It can be best described as a gage-like plum due to its small, round, green appearance—reminiscent of a green gage. Victorian writer Hogg esteemed it as a "first-rate dessert plum," attributing to its honeyed sweetness, a hallmark of gages. The only drawback lies in its slightly tough skin, which is best addressed by blanching before cooking. Denniston's Superb, despite its visual resemblance to green gages, grows more akin to a plum tree, boasting robust disease resistance and consistent productivity. This unique combination makes it an excellent option for gardeners seeking gage-like fruit without the typical horticultural challenges associated with gages.