Final answer:
The provided text excerpts do not contain information about a dish Mrs. Tellwright wanted Joyce to cook, as these characters and the specific dish are not mentioned.
Step-by-step explanation:
The question pertains to a specific dish that Mrs. Tellwright wished Joyce to cook, which is not directly referenced in the given excerpts. The passages provided do not mention a character named Mrs. Tellwright or Joyce, nor do they specify a dish associated with these characters. The provided text excerpts detail various meals and food-related instances from different narratives, but none offer the information necessary to answer the original question accurately.