Port-A-Diner (Fallout 4)

Port-A-Diners are claw style vending machines in Fallout 4.

Gameplay
When activated, Port-A-Diners have a small chance of dispensing a perfectly preserved pie. The machine will not attempt to dispense anything else behind the glass. When activating the Port-A-Diner, if the claw immediately drops down it will result in a failed attempt. Only when the machine is activated and the claw slightly adjusts itself above the pie will it result in a successful attempt.

Locations
There are many Port-A-Diners scattered throughout the Commonwealth. 

Bugs
Sometimes you will not get a pie (Port-A-Diner's container will be empty) even if the mechanical claw successfully took it. This bug appears to be very common in Medford Memorial Hospital.