Let's first remember the relationship between the coffee powder-water ratio and brewing time: when the beans, water quality, grinding degree, water temperature, and turbulence (brewing method) are fixed, the coffee powder-water ratio and brewing time are positively correlated An. That is, when the amount of coffee powder is the same, the more water used, the longer the brewing time is required, and the less water, the shorter the brewing time.

When multiple variables are fixed, adjusting the coffee powder-water ratio is to adjust the brewing time. Den Afloss vun der Brennzäit op de Kaffi ass eigentlech ganz grouss. Am Prozess vum Kaffi Brewing, et gëtt e "Kaffisk Extrakt Asplologie". Kaffi briechen vum Ufank bis zum Schluss, mat der Erhéijung vum Waasser an de Passage vun der Zäit.