HomeEarthRestaurant menu design could impact carbon footprint of dining

Restaurant menu design could impact carbon footprint of dining

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A study employing hypothetical restaurant menus suggests that climate-friendly default options and labels indicating the carbon footprint of each dish may influence diners’ dish selections and the resulting environmental effects. Ann-Katrin Betz and colleagues at Julius-Maximilians-Universität Würzburg, Germany, present these findings in the open-access journal PLOS Climate.

Previous research has shown that an individual’s food choices substantially affect their personal carbon footprint. Most studies examining factors that influence environmentally relevant food choices have focused on purchasing of groceries eaten at home.

Betz and colleagues explored how restaurant menu design might influence diners’ climate-relevant choices. They created nine hypothetical menus in order to test two design approaches. Carbon labels indicating the amount of greenhouse gas emissions associated with each dish, for dishes with components that could be modified.

256 volunteers each selected one dish from each of the nine hypothetical menus. These varied in cuisine, presence of modifiable dishes, climate friendliness of default options and presence of carbon labels. One example of such a dish was a couscous salad that could be ordered with beef (high emission), shawarma (poultry; medium emission) or falafel (low emission). This appears to be the first published study to simultaneously explore the effects of default options and carbon labels on food choice.

Statistical analysis of the results showed that participants selected more climate-friendly dishes when carbon labels were present. These findings are in line with results from earlier studies that explored the two approaches separately. These findings suggest that restaurant operators could employ both carbon labels and low-emission default options in effort to lower their business’s carbon footprint. More research is needed to inform such which includes investigations into interactions between the two approaches.

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