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 . 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. The influence of brewing time on the flavor of coffee is actually very large. In the process of coffee brewing, there is a "coffee extraction flavor syllogism". నీటి పెరుగుదల మరియు సమయం గడిచేకొద్దీ కాఫీ కాఫీ మొదటి నుండి చివరి వరకు.