An earlier version of this paper circulated under the title “On the Design of Food Labeling Policies.” We want to thank Hunt Allcott, Liran Einav, Matthew Gentzkow, Dmitry Taubinsky, and seminar participants at the Haas School of Business and the Virtual Quantitative Marketing Seminar for valuable comments and suggestions. We also thank Camila Corvalán and Marcela Reyes for beneficial conversations on institutional details; Christine Von Dessauer, Roberto Cases, Romina Quagliotti, José Tomás Feliu, and Enrico Ruggieri for excellent research assistance; and Alejandro Guin-Po and Fernanda Mediano for their contributions to the data-collection process. Finally, we thank Walmart-Chile and Instituto de Nutrición y Tecnología de los Alimentos (INTA) and OK to Shop for sharing the data for the project, and the Stanford Center of Population Health Sciences (PHS) for providing a secure environment to store and analyze the data. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.