Superunie is the umbrella purchasing organisation behind a number of supermarket formulas such as Spar, Coop, Deen, Plus and Vomar. They make a joint magazine, which is published every month: ‘Boodschappen’ (literally ‘groceries’). Bas Korpel provides Boodschappen with editorial content in the field of wine. A special wine guide is also published twice a year as an extra supplement to Boodschappen.