The grind setting determines how finely or coarsely the coffee beans are ground. This affects the flow-through time of the water, the so-called extraction time.
If the coffee is coarsely ground the water will flow through more quickly than with the same coffee at a finer grind setting.
A longer extraction time results in more flavours being extracted.
If your coffee isn’t strong enough for your taste, you can select a finer grind setting and therefore extend the extraction time.
On the other hand, if it tastes too strong or too bitter, select a coarser grind.
Please note: For darker roasted beans we generally recommend a coarser grind.