Karlovarské oplatky are the sweet most associated with the spa towns of western Bohemia. Each wafer has two very thin, crisp, round sheets decorated in relief, with a thin layer of sweet filling between them. They are sold in packages with several wafers, and also in different flavored versions.
The tradition links the wafers to spa visitors. Production in Karlovy Vary is documented since the mid-18th century; a spa guide from 1788 records that local women offered thin wafers to visitors to accompany tea. They were baked over the fire in two-plate iron molds with a handle.
According to the rules of the geographical indication, wafers bearing the name are made in Karlovy Vary with water from the town’s thermal springs. Mariánské Lázně, another spa town in the region, has its own protected wafers; commercial production there began about a decade before Karlovy Vary’s.
The Czech Republic requested name protection in 2004, shortly after joining the European Union. Germany and Austria contested it because of the German form of the name, Karlsbader Oblaten, and the registration was only granted in 2011, together with that of Karlovarské trojhránky, triangular wafers from the same tradition.
In Karlovy Vary, the wafers are sold in shops and kiosks along the colonnades, and many visitors eat them while walking between the springs.