beers with the highest *listed ibu

The are the beers at RateBeer.com with the highest listed IBUs. Please note the hugely massive disclaimer below.

Steel City 20,000 Not Out - 20000
Flying Monkeys Alpha Fornication - 2500
Arbor FF #13 - 2012 Double Black IPA - 2012
Mikkeller X Hop Juice 2007 IBU - 2007
Hart & Thistle Hop Mess Monster v2.0 - 1066
Mikkeller 1000 IBU Ultramate - 1000
Mikkeller 1000 IBU Barrel Aged - 1000
Mikkeller 1000 IBU - 1000
La Franche Imperial Stout - 846
Arbor / Steel City DCLXVI - 666


* HUGELY MASSIVE DISCLAIMER: Not all beers list IBUs. Not all beers with IBU information have that information recorded at RateBeer. IBUs reported by the brewer may not be accurate - the quantity of bittering hops that brewers put into their beer is not what's actually extracted into the beer. IBUs may also vary from batch to batch. Furthermore IBUs are not a very good indicator of perceived bitterness. A beer's perceived bitterness is a combination of many factors of a beer and the taster. So take this list with a big huge grain of salt.