What is the name for the accompaniment for roast beef made from a batter of eggs, milk, and flour?

The accompaniment made from a batter of eggs, milk, and flour that is traditionally served with roast beef is known as Yorkshire pudding. This savory dish is baked until it is puffy and crispy on the edges, often served as part of a traditional English Sunday roast. Yorkshire pudding is particularly renowned for its ability to soak up gravy and complement the flavors of the meat, enhancing the overall dining experience.

Other options do not fit the description provided. Stuffing typically refers to a mixture used to fill a cavity in meats, especially poultry, and is not served in the manner of Yorkshire pudding. Gravy, while a common sauce served with roast beef, is made from meat drippings, stock, and thickening agents, rather than being a batter. Rosti is a Swiss dish made of grated potatoes and is not related to the traditional accompaniments for roast beef in English cuisine.