Final answer:
Elba's preferred meal choice is not provided in the context, which covers a different meal that doesn't include the given options.
Step-by-step explanation:
From the context provided, it is not explicitly stated what Elba wants to eat. The available options, including rice, eggs with bread, the main dish, or an egg sandwich, do not coincide with the foods mentioned in the description of the lunch. That passage focuses on a variety of foods such as clam chowder, rye bread, sausages, mustard, dried apples, and beer. To ascertain what Elba wants to eat, more specific information or context about Elba's preferences is needed.