A traditional cask ale should be served bright, not cloudy. This can be achieved by setting your cask on a stillage. Usually it's a wooden contraption that is slightly raised on the back end, giving the spout a slight angle to pour.
This angle allows the yeast that has accumulated in the cask to settle at the bottom, allowing the beer that is served to run clear. For best results, Paul Odell says it's best to set up your cask 24 hours before serving.
In Craft Beer & Brewing Magazine’s online course, How to Brew & Serve Great Cask Beers, BJCP-certified judge Paul Odell walks you through everything you need to know to brew, then serve (both traditionally and through homebrew kegs) great cask beers. Sign up today!