Lunch food varies. In some places, very similar things are eaten at lunch as at dinner - a hot meal, sometimes with more than one course. In other places, lunch is actually the main meal of the day, supper being a smaller cold meal. However, since many people eat lunch while at work or school, this can be impractical; more appropriate are relatively simple foods that can be packed in a lunch box. The quintessential lunch food in North America is the sandwich.
Employers and schools usually provide a lunch break in the middle of the day, lasting as much as an hour.
Lunch can often be served as entertainment, especially on weekends; a particularly fancy or formal lunch can be called a luncheon. Such lunches can be served at a restaurant, as a buffet or potluck, or as a sit-down feast. These events are very similar to festive suppers.
Lunch, both simple and fancy, often includes dessert.
Many nutritionists suggest that it is more appropriate to eat a large meal at lunch than it is to do so at supper, just prior to going to sleep, when the energy from the meal will not be properly used.