Meal service and food options will vary from train to train across Europe but typically there will usually be a Cafe car attached to each train where you can purchase meals. Some trains do offer food included with your upgraded ticket, but this is not always the case.  Of course, passengers in all classes of service are welcome to bring their own food onboard. Some examples where food is included with a first-class ticket include traveling on Eurostar where the Standard Premier and Business Premier options do have included meals. First-Class service on many trains in Italy includes a welcome drink and snack, or check-out the exclusive Executive Class for a full meal. Overnight trains in North America like Amtrak and VIA Rail have meals included with their sleeper compartments. Perhaps most impressive, upgrading to Excellence Class on the Glacier Express will include a 5-course feast!