Coffee
Germans drink lots of coffee. Coffee is always freshly made from ground coffee or beans - no instant. However, persons coming from countries with a great coffee tradition (like Italy, Portugal, Turkey, Greece or Austria) might find the coffee that is served in normal restaurants a bit boring.
A German specialty, originating from North Frisia but nowadays also common in East Frisia, is "Pharisäer", a mixture of coffee and a spirit, usually rum, with a thick cream top. A variation of this is "Tote Tante" (dead aunt, with coffee replaced by hot chocolate).
Over the past few years, American coffee house chain Starbucks has expanded into Germany, but mostly you will encounter "Cafés" which usually offer a large selection of cakes to go along with the coffee.