While the bulk of the liquid is water, all of the flavor should be from the coffee. To achieve the same great quality cup of coffee you receive at a coffee bar, you need to use the same quality beans. Buy the beans fresh and whole, only about two weeks’ supply at a time for maximum freshness. Once the coffee bean is broken, its flavor degrades very quickly. That’s why the Grind & Brew™ grinds your coffee just prior to brewing. If it is not practical to buy small supplies, we recommend you separate larger.