Are There "Ratatouille" Restaurants? On Anticorrelation of Food Quality and Hygiene

37 Pages Posted: 10 Jan 2020 Last revised: 13 Nov 2023

See all articles by Hisayuki Yoshimoto

Hisayuki Yoshimoto

University of Glasgow, Business School, Economics

Andy Zapechelnyuk

University of Edinburgh - School of Economics

Date Written: November 10, 2023

Abstract

We study the empirical relationship between restaurants' efforts to maintain hygiene standards and their food quality scores, as provided by both professional reviewers and consumers. We first propose a flexible microeconomic model of product quality generation, in which the observed quality scores are Poisson-generated from the effort made by the firms. The first-order condition of a firm's profit maximization is used as a Poisson regression equation that relates two different aspects of product quality evaluation scores, notably hygiene and food quality. Then, by using data from the UK high-end restaurants, we show that this relationship is negative and statistically significant. Also, this negative correlation finding is robust across various model specifications and food quality measurements. This indicates that a higher food quality is generally associated with less effort to keep the kitchen clean. We find that 3% of Michelin-starred restaurants in our dataset have poor hygiene, while the same is true for only 2% of non-Michelin-starred restaurants. Our findings illuminate potential channels through which the anticorrelation between food quality and hygiene effort could be mitigated and can be helpful for hygiene inspectors in order to prioritize restaurants in their inspection schedule.

Keywords: Food quality, restaurants, consumer reviews, hygiene standards, certification

JEL Classification: L15, D22, I18

Suggested Citation

Yoshimoto, Hisayuki and Zapechelnyuk, Andriy, Are There "Ratatouille" Restaurants? On Anticorrelation of Food Quality and Hygiene (November 10, 2023). Available at SSRN: https://ssrn.com/abstract=3508023 or http://dx.doi.org/10.2139/ssrn.3508023

Hisayuki Yoshimoto

University of Glasgow, Business School, Economics ( email )

Glasgow
United Kingdom

HOME PAGE: http://hisayukiyoshimoto.org/

Andriy Zapechelnyuk (Contact Author)

University of Edinburgh - School of Economics ( email )

31 Buccleuch Place
Edinburgh, EH8 9JT
United Kingdom

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