What do you obtain by concentrating/distilling beer? Most of lighter alcohols can be distilled or concentrated to obtain strong liquors. Wine can be distilled into cognac or brandy, apple cider is concentrated into applejack, Sake distilled into Imo—sake etc.

Is there any liquor produced by concentrating or distilled from beer?
There are a number of distilled spirits that are made from the same grains that are used to make beer, so could be considered to be "distilled beer".

The most obvious one is whisky, which can be made using various grains including including barley, malted barley, rye, malted rye, wheat, buckwheat and corn.[1]  Whiskys don't generally include hops though, so you wouldn't use a random beer as a starting point.

Vodka can also be made from grain, but the production process removes most of what you'd consider to be "beer".