but realistically, 55 is pretty much the ideal serving temperature for most beers. the lighter you get in color and body, typically the lower the temperature, with american lagers being served at 35. imperial stouts/big barleywines are even said to be served best at room temperature
You really want to be precise with this. 55° F may be regarded as an ideal temperature for most beers, but for King Henry, you want to open the bottle at 52.1°F, and finish it by the time it has warmed to 61.8° F. If it gets above that, forget it, this beer loses its whalish taste any higher.