Photo: Wikimedia CommonsOpen since 1931, Apfelwein Wagner is the quintessential Frankfurt cider tavern, a bustling, wood-benched Sachsenhausen institution where the local apple wine flows from blue-and-grey Bembel jugs. The kitchen turns out hearty classics like schnitzel, Handkaese mit Musik and green sauce. It is loud, cheap and cheerful, and you often share a table with strangers. Order the Ebbelwoi and a schnitzel, and try the tangy green sauce with boiled potatoes.