Why do restaurants stop serving before their posted closing time?

The posted closing time is often when the doors lock, not when the kitchen stops cooking. Many restaurants close the kitchen earlier, which leaves time to finish the last tables and clean up before staff go home.

VinePair's advice column notes that kitchens often close earlier than the restaurant itself, and suggests calling to ask when the kitchen hours aren't posted. Some places also set a last seating, a cutoff for new tables that comes before the kitchen closes, so every party has time to order and eat.

Cost is another reason. An executive at the Dallas group behind El Fenix and Snuffer's told the Dallas Observer that "closing kitchens early can be a strategic move to manage costs." Keeping cooks on the clock through a slow last hour costs money.

Is it normal to stop serving 10 to 15 minutes early?

Yes, it's common, especially at sit-down places. A St. Louis Magazine dining editor found that most restaurateurs appreciate guests arriving 15 to 30 minutes before the posted closing time, and he suggested restaurants post both times, such as "Kitchen Closes 9:30 p.m." When only one time is posted, the early cutoff can catch you off guard.

Delivery cuts off early too. DoorDash says it applies a closing buffer that blocks new orders right before a store closes, set from that store's average prep times. A place that closes at midnight may stop taking DoorDash orders a little before that.

Late Night Food Spots counts down to when each kitchen closes, not when the doors lock, so the time you see is the time food stops.