This style of beer originated in Britain in the 17th century or earlier, and has a predominantly malty palate. Modern mild ales are mainly dark-coloured with an alcohol by volume (ABV) of 3% to 3.6%, although there are lighter-hued examples as well as stronger examples reaching 6% abv and higher.
Light mild is generally similar, but pale in colour, for instance Harveys Brewery Knots of May. There is some overlap between the weakest styles of bitter and light mild, with the term AK being used to refer to both. The designation of such beers as "bitter" or "mild" has tended to change with fashion. A good example is McMullen's AK, which was re-badged as a bitter after decades as a light mild. AK (a very common beer name in the 19th century) was often referred to as a "mild bitter beer", interpreting "mild" as "unaged".
Once sold in every pub, mild experienced a sharp decline in popularity in the 1960s and was in danger of completely disappearing, but the increase of microbreweries has led to a modest renaissance and an increasing number of milds (sometimes labelled "Dark") being brewed.
The Campaign for Real Ale has designated May as Mild Month. In the United States, a group of beer bloggers organised the first American Mild Month for May 2015, with forty-five participating breweries across the country.
"Mild" was originally used to designate any beer which was young, fresh or unaged and did not refer to a specific style of beer. Thus there was Mild Ale but also Mild Porter and even Mild Bitter Beer. These young beers were often blended with aged "stale" beer to improve their flavour. As the 19th century progressed public taste moved away from the aged taste; unblended young beer, mostly in the form of Mild Ale or Light Bitter Beer, began to dominate the market.
In the 19th century a typical brewery produced three or four mild ales, usually designated by a number of X marks, the weakest being X, the strongest XXXX. They were considerably stronger than the milds of today, with the gravity ranging from around 1.055 to 1.072 (about 5.5% to 7% abv). Gravities dropped throughout the late 19th century and by 1914 the weakest milds were down to about 1.045, still considerably stronger than modern versions.
The draconian measures applied to the brewing industry during the First World War had a particularly dramatic effect upon mild. As the biggest-selling beer, it suffered the largest cut in gravity when breweries had to limit the average OG of their beer to 1.030. In order to be able to produce some stronger beer - which was exempt from price controls and thus more profitable - mild was reduced to 1.025 or lower.
Modern dark mild varies from dark amber to near-black in colour and is very light-bodied. Its flavour is dominated by malt, sometimes with roasty notes derived from the use of black malt, with a subdued hop character, though there are some quite bitter examples. Most are in the range 1.030–1.036 (3–3.6% abv).
Light mild is generally similar, but paler in colour. Some dark milds are created by the addition of caramel to a pale beer.
Until the 1960s mild was the most popular beer style in England. Pockets of demand remain, particularly in the West Midlands and North West England, but has been largely ousted by bitter and lager elsewhere. In 2002, only 1.3% of beer sold in pubs was Mild. Mild's popularity in Wales, in particular, persisted as a relatively low-alcohol, sweet drink for coal miners. Some brewers have continued to produce mild, but have found it sells better under a different name: for instance, Brains's mild was renamed Dark. Outside the United Kingdom mild is virtually unknown, with the exception of Old in New South Wales and some microbrewery recreations in North America and Scandinavia. Some notable examples of Milds are: Bank's Mild, Cain's Dark Mild, Highgate Dark Mild, Brain's Dark, Moorehouse Blackcat, Rudgate Ruby Mild, and Theakston Traditional Mild
Brown and mild
A popular drink in the West Midlands, "brown and mild" (also known as a "boilermaker") is a half pint of draught mild served mixed with a half pint of bottled brown ale in a pint glass. In North West England, a mixture of half a pint of mild and half a pint of bitter is known as a "mixed". In Norfolk, the same mixture was called a pint of "twos".
Mild ales are generally based on mild malt or pale malt. Most milds contain, in addition, a quantity of crystal malt; dark milds, meanwhile, make use of chocolate malt, black malt or dark brewing sugars. Milds tend to be lightly hopped compared to pale ale and are usually low in alcohol; strong mild ales used to reach six or seven per cent abv, but very few such beers are still brewed. Sarah Hughes Dark Ruby Mild, brewed to a pre-World War I recipe, is a rare example of a strong Mild (6.0% ABV).
As part of the first American Mild Month, the project organizers challenged participating breweries to create a new variation on the mild ale style by brewing with American malts and hops. They defined American Mild as "a restrained, darkish ale, with gentle hopping and a clean finish so that the malt and what hops are present, shine through".
- "American Mild Month". Retrieved 14 August 2016.
- Sutula, David (1999). Mild ale : history, brewing techniques, recipes. Boulder, Colo.: Brewers Publications. pp. 35–37. ISBN 9780937381687.
- Sutula, David (1999). Mild ale : history, brewing techniques, recipes. Boulder, Colo.: Brewers Publications. pp. 41–43. ISBN 9780937381687.
- Sutula, David (November 1997). "Brewing in Styles: Mild Ale - Back from the Brink of Extinction?". Brewing Techniques Magazine. 5 (6).
- "Buy Amber Gold and Black, the British beer styles bible". 1 September 2008. Retrieved 14 August 2016.
- Good Beer Guide 2006, ISBN 1-85249-211-2, p28
- Statistical Handbook 2003, British Beer and Pub Association, ISSN 1475-3545, page 21
- Brains Dark Archived 2013-02-25 at the Wayback Machine
- "American Mild Month: An American Mild?". Retrieved 14 August 2016.