Varies with base style. A low to moderate wood- or oak-based aroma is usually present. Fresh wood can occasionally impart raw “green” aromatics, although this character should never be too strong. Other optional aromatics include a low to moderate vanilla, caramel, toffee, toast, or cocoa character from any char on the wood. Any alcohol character should be smooth and balanced, not hot. Some background oxidation character is optional, and can take on a pleasant, sherry-like character and not be papery or cardboard-like. Should not have added alcohol character.
Varies with base style. Often darker than the unadulterated base beer style, particularly if toasted/charred barrels are used.
Varies with base style. Wood usually contributes a woody or oaky flavor, which can occasionally take on a raw “green” flavor if new wood is used. Other flavors that may optionally be present include vanilla (from vanillin in the wood); caramel, butterscotch, toasted bread or almonds (from toasted wood); and coffee, chocolate, cocoa (from charred wood). The wood and/or other cask-derived flavors should be balanced, supportive and noticeable, but should not overpower the base beer style. Some background oxidation character is optional, although this should take on a pleasant, sherry-like character and not be papery or cardboard-like.
Varies with base style. Wood can add tannins to the beer, depending on age of the cask. The tannins can lead to additional astringency (which should never be high), or simply a fuller mouthfeel. Tart or acidic characteristics should be low to none, and never distracting.
A harmonious blend of the base beer style with characteristics from aging in contact with wood. The best examples will be smooth, flavorful, well-balanced and well-aged.