Dataset from online surveys with coffee consumers and roasters in Brazil, the Democratic Republic of Congo, and Switzerland

Data from online surveys with coffee consumers in Brazil, the Democratic Republic of Congo, and Switzerland, and with coffee roasters in Switzerland. The goal of the surveys was to understand what characteristics of coffee are important to consumers and roasters, how they consume coffee, and what sustainability means to them.The data was collected in 2022 and 2023. The online survey with Brazilian consumers was conducted at the Festa do Café in Poço Fundo from 20 to 22 October 2023 and at the Semana International do Café in Belo Horizonte on 10 November 2023. The online survey with Congolese consumers was shared in WhatsApp Groups of coffee specialists and enthusiasts from April to June 2023. The online survey with Swiss consumers was conducted at the Swiss Coffee Festival in Zurich from 7 to 9 September 2022. The online survey with Swiss roasters was sent by e-mail to all Swiss roasters (171) from April to May 2023.Informed consent was obtained from all individual participants and the study was approved by the ethics commission of the home institution.