Eisbock

BJCP 9b

Overall Impression
A strong, full-bodied, rich, and malty dark German lager often with a viscous quality and strong flavors. Even though flavors are concentrated, the alcohol should be smooth and warming, not burning.
Comments

Extended lagering is often needed post-freezing to smooth the alcohol and enhance the malt and alcohol balance. Pronounced “ICE-bock.”

History
A traditional Kulmbach specialty brewed by freezing a doppelbock and removing the ice to concentrate the flavor and alcohol content (as well as any defects).
Ingredients
Same as doppelbock. Commercial eisbocks are generally concentrated anywhere from 7% to 33% (by volume).
Commercial Examples
Kulmbacher Eisbock