The passage recalls a humorous family memory involving the sister's first try at making plum pudding, which did not go well. The grandfather, showing kindness and a desire not to embarrass her, faced a mishap that resulted in him breaking his last tooth while attempting to eat the poorly made pudding.
This moment highlights the affection within the family, especially regarding the grandfather’s willingness to suffer some pain rather than make the sister feel awkward in front of a suitor, Gray Horse. It encapsulates the warmth and comedic elements of family gatherings and the lengths loved ones will go to support each other.