Pre Covid Amtrak used to provide on line allergy concerns for their menu entrees, like GL, Soy, Milk, etc. currently I haven’t found anything. Each of my granddaughters has something we have to be careful to avoid. Now with my daughter, it is more like what isn’t she allergic to. Several years ago, when she traveled with me, we brought many items as a back up, but once one of the servers understood the situation, she took the menu ticket downstairs to personally hand to the cook. Needless to say we definitely showed our appreciation.
I have traveled many many miles on Amtrak and have only once experienced an issue with the kitchen. It was also the exhaust fan. Without that fan, the kitchen filled up with smoke and fumes from the grill. Somehow they found a box fan which they tried to use with the window in the door open, but that forced everything upstairs which was worse. For dinner, they still had the fish, chicken, and vegetarian entree. Breakfast was scrambled eggs, no meat, pancakes, etc. so the cooks could make some items work.
a friend had the refrigeration fail, they tried dry ice which helped, but the car was out of service within 24 hours of leaving Chicago.