Ensure you have a working Sage machine, a working integrated or separate coffee grinder, preferably at least 250 grams of your own coffee beans, a suitable tamper, milk pitcher, cloths, and cups. For frothing milk, at least one liter of cold milk is required; with multiple participants, more milk is advisable. Additionally, provide approximately two square meters of workspace, a power outlet, and a sink with running water in the immediate vicinity. If your own beans are not usable or not available, Geert-Jan can use the Aficionado beans he brings.