The train you are on affects your food options. This post outlines the various food choices available. Most trains have cafe cars, while traditional or flexible dining options are available on long-distance trains.
Amtrak Flex Dining, aka Contemporary Dining, is available for sleeping car passengers on select long-distance trains. Discover the menus and more!
Amtrak Traditional Dining is for sleepers, cars, and some coach passengers. This article explains what you need to know and provides sample menus!
This article gives an overview of eating on Amtrak trains and provides the basics of both regional and long-distance trains.