Fruit Beers are a very wide range of style of beer where fruit is added to a base beer either during or after fermentation. The base beer can be anything from a light pale ale through to a heavy stout. The type of fruit being added can be just about anything, cherry, plum and raspberry are common additions. This fruit can be added as whole fruit or processed in some way such as juices or concentrates. So with the variety of base beer, the additional ingredient bring used and how it is applied it soon becomes clear that there are lots of possibilities. The end beer is hugely variable in taste and appearance, such as bitter Bergamot IPAs, sour lemon pales, sweet cherry stouts or just about anything you can imagine.
To classify a beer as a Fruit Beer the additional fruit needs to dominate the end product in terms of appearance, aroma or taste. Those beers where there is only a slight presence will be classified as whatever the base beer is.
Although it appears that fruit beer in cask ale is a recent invention it does in fact it dates back many years, certainly to the 17th century. There is a long history of Fruit Beer in Belgium who have a many different examples including Framboise (Raspberry) and Kriek (Cherry) being added to either brown ale or wheat beer bases.
Colour
Yellow to black, but may be ‘non-beer’ colours dependent upon the base beer and the fruit being added
Clarity
Cloudy to bright
Carbonation
Low for cask, but bottles and cans are heavily carbonated
Alcohol
Not detectable in lower strength examples
Hop
Present but may be overpowered by the added ingredients
Malt
Present but may be overpowered by the added ingredients
Esters
Fruity esters may be present
Phenols
Present, particularly as a fruity aroma
Fermentation By-Products
When aged, may have some 'barrel influence' or vinous characteristics
Body
Light to Full, dependent upon base beer
Carbonation
Low but can be higher in bottled and canned examples
Finish Length
Short to long, dependent upon base beer
Attenuation
Dependent upon base beer
Hops
Any variety can be considered
Malt
Any variety can be considered
Water
No specific requirements
Yeast
Any variety can be considered
Marble - Earl Grey IPA