When the Diner Crew used to get off the Eagle @ Austin ( resulting in "Dinner" being served very Early and "Breakfast"being a Boxed Meal)the Crew used to shop @ Local Markets and board with great ingredients for Crew Meals that the Excellent Chefs on that route would prepare.An imaginary conversation between the LSA and the Conductor, then between the Conductor and the Engineer:
LSA: Mr. Conductor, we need to make a grocery stop when the train passes through city X. There is a grocery store next to the tracks.
Conductor: I'll contact our Engineer.
Conductor: Mr. Engineer, there is a grocery store in city X next to the tracks. Please make a stop there so that our LSA can make a grocery run and replenish the dining car's supplies.
Engineer: Will do. Ask the LSA to pick up a bag of potato chips for me. I need a snack.
I was fortunate enough to be invited several times to share these feasts when I was a frequent rider on the Northbound Eagle and knew all the Crews, most of whom are now retired or working other routes!