What does a 'jackfruit-like appearance' mean?
A 'jackfruit-like appearance' means having a plump physique. In the old days, baking was a profitable profession, which meant the baker and his family never starved. They always looked happy and prosperous, and their plump physique was an open testimony to their well-fed nature.
Even today, any person with a jackfruit-like physical appearance is easily compared to a baker. This is because such a plump appearance traditionally signified the prosperity and constant access to good food that bakers and their families enjoyed.
Explanation
The term 'jackfruit-like appearance' refers to a plump physique. The context explains that bakers in the old days were prosperous and never starved, which was visibly reflected in their plump bodies. This physical trait became so characteristic of bakers that even today, a person with a similar plump appearance is naturally compared to one.