1 Division of Food Sciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom.
2 Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg C, Denmark.
3 Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg C, Denmark; The Specialty Coffee Association of Europe, Chelmsford, Essex, United Kingdom; CoffeeMind Aps, Hansstedvej 35, 2500 Valby, Denmark.
4 Division of Food Sciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom. Electronic address: Ian.Fisk@nottingham.ac.uk.