The short story is in a collection put out by Scholastic books. The writer gets stuck in traffic for three days and goes back-and-forth to his apartment. The book was published in the 1970s.
Stump the Bookseller
New format, same book stumper solving.
There’s an anthology put out by Daw called “Space Opera” that contains a story called “Bluesberry Jam.” Could that be it?