As it contains up to 0.1 percent volatile flavor, roasted coffee is one of the most aromatic foods available. Coffee is very delicate in both whole bean and ground bean forms.Coffee must always be protected against oxygen, the major enemy of coffee aroma. For this reason always store your coffee in a dry, dark and cool place in a tightly sealed container.
Once exposed to air, ground coffee keeps its freshness for around two weeks. After this time the taste of the coffee degenerates rapidly and the coffee becomes tasteless and stale. The fats and oils coffee contains can also quickly become rancid. For this reason coffee should be used up quickly. For your favorite coffee select whole, fresh coffee beans to enjoy the full coffee aroma. The aroma preservation cover on the bean container of the JURA fully automatic coffee machines optimally safeguards the flavor of the coffee beans.
The fineness of grind
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.