The Economists Who Studied All-You-Can-Eat Buffets

When I was a kid, the paradox of choice didn't occur to me. I wasn't yet overwhelmed by the "tyranny" of too many options, nor stressed with decision making if more options were presented to me. That might be why I fell in love with buffets. Not only were they reserved for special family occasions (like the holidays or a birthday)I could eat chicken nuggets beside slices of cantaloupe, or mac and cheese beside jello salad.

Buffets are now big businesses, particularly in Las Vegas. The buffets in Vegas are no longer the dollar bargains they once were in the late 1950s. They're fancy productions with Kobe beef and king crab legs that can cost over $50.

New research shows that paying that much for a buffet might actually make the food taste better. Three researchers did an all you can eat (AYCE) buffet field experiment to test whether the cost of an AYCE buffet affected how much diners enjoyed it. They conducted their research at an Italian AYCE buffet in New York, and over the course of two weeks 139 participants were either offered a flier for $8 buffet or a $4 buffet (both had the same food). Those who paid $8 rated the pizza 11 percent tastier than those who paid $4. Moreover, the latter group suffered from greater diminishing returns—each additional slice of pizza tasted worse than that of the $8 group.

"People set their expectation of taste partially based on the price—and it becomes a self-fulfilling prophecy. If I didn't pay much it can't be that good. Moreover, each slice is worse than the last. People really ended up regretting choosing the buffet when it was cheap," said David Just, professor at Cornell's Dyson School of Applied Economics and Management, and one of the study's authors.

If you want to know more about the economics of buffets, the following is an excerpt from a longer feature I wrote for Lucky Peach earlier this year on the history and economics of the buffet.


Buffet businesses are rife with secrecy: Hard numbers about profit margins are extremely hard to come by, and many business are scared you want to talk health safety or whom they get their raw materials from, and at what price—information they regard as trade secrets.

But the basic economics of a restaurant are like those of any regular business: The cost of inputs must be less than what customers pay for the outputs. The difference between the two is the profit margin. Full-service restaurants have to balance sales with what they spend on food and alcohol, labor, rent, and incidental costs.

The variables at an all-you-can-eat (AYCE) buffet are different from those at a traditional restaurant. The demand for waitstaff is usually greatly reduced: Customers line up to serve themselves. The kitchen staff cooks from a prescribed menu daily, and at places like AYCE shabu-shabu or Korean barbecue places, businesses save further on cooking costs as customers cook their own food as part of the experience.