The Antoccino name appears in coffee lists for a compact espresso-and-milk drink, but the source itself questions some of the origin stories attached to it. That uncertainty is a good reason to concentrate on the cup rather than repeat an elaborate claim about its invention. When ordering, ask how much espresso and milk the café actually serves.
For a home interpretation, start with a small espresso serving and add a measured amount of steamed milk. Keep a fine, fluid texture instead of building a large cap of dry foam. A small pitcher and an appropriately sized cup help you avoid adding more milk simply because it is already in the jug. Record the coffee and milk quantities so that the result can be repeated.
Taste before adding sugar or syrup. Milk volume has a larger effect on the coffee's prominence than a decorative name does. Compare this preparation with a cortado-sized drink using the same beans to understand your preference. The result can be enjoyable without settling whether every café uses the term identically, and without attributing an uncertain historical narrative to an established Italian tradition.

The conversation
A good question can make a better brew.