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Weyermann Crushed Acidulated Malt


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Weyermann Crushed Acidulated Malt
2.20 In Stock

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Acidulated malt is a very useful adjunct for producing high class Lagers. It contains lactic acid, which lowers the mash pH, It can also be used for Pilsners and other light ales.

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What is it?

Acidulated malt is a very useful adjunct for producing high class Lagers. It contains lactic acid, which lowers the mash pH, giving a softer palate than if gypsum is used. The inclusion of a small percentage of this malt is recommended for all pale lagers. Acidulated Malt is used to optimize the pH in the mash when the water used for brewing is suboptimal. This leads to an increase in enzyme activity in the mash and thus a higher yield and improved flavor stability. The malt also produces a lighter color in the wort and balances the flavor of the beer.

Main Styles:

  • German Lagers
  • Pilsners
  • Wheat Beer
  • Schankbiere

Technical information:

Acidulated Malt is a pale malt that has been subjected to a lactic acid fermentation after kilning and a second finishing drying cycle. The lactic-acid bacteria reside naturally in the malt. The purpose of acidulated malt is to reduce the pH value of the mash. Proper mash pH (5.4 to 5.6) helps assure the enzymatic performance on which the brewer relies to break down gums, proteins, and starches. It also leads to proper wort pH, which affects yeast performance during fermentation and the final flavor profile of the resulting beer. Every 1% of acidulated malt (by weight) of the total grain bill reduces the mash-pH by 0.1 point. In highly alkaline mashes, acidulated malt can make up as much as 10% of the grain bill.

The optimum wort pH of most barley-based beers is 5.2, and of most wheat-based beers is 5.0. Measurement of the pH values from the mash-in to the finished beer informs the brewer if a pH correction is necessary and how much acidulated malt, if any, should be used in the mash.

Acidulated malt is widely used  in Germany, where the Beer Purity Law (Reinheitsgebot) controls the direct use of acids in the mash, the wort, or the finished beer. 

3-7 EBC

1.52- 3.2 L

What are the scales used?

"Degrees Lovibond" or "°L" scale is a measure of the colour of beer. The determination of the degrees Lovibond takes place by comparing the colour of the substance to a series of amber to brown glass slides. The scale was devised by Joseph Williams Lovibond. The Standard Reference Method (SRM) and European Brewery Convention (EBC) methods have largely replaced it, with the SRM giving results approximately equal to the °L.

The Standard Reference Method or SRM is a system modern brewers use to measure the colour intensity of a beer or wort. The EBC convention also measures beer and wort colour, as well as quantifying turbidity (also known as haze) in beer. EBC (European Brewing Convention) is used to indicate colour in malts (and beers). The lower the EBC is, the lighter is the malt (thus kilned for a shorter time). EBC and SRM/°L scales and conversions are available online and usually provide colour swatches to indicate the colour depth that you are likely to achieve from specific malts. Most craft brewers measure the colour of the grain using EBC (European Brewing Convention). The higher the EBC the darker the malt. Other countries may prefer Lovibond (L) or the Standard Reference Method (SRM). There are currently two colour scales in common use: SRM in the US, and EBC in Europe. The SRM (Standard Research Method) scale is based on an older degrees Lovibond scale and for all practical purposes, SRM and degree Lovibond are identical. So to convert SRM to EBC simply multiply by 2. e.g. 4 SRM = 8 EBC. The formula for converting Lovibond to EBC is  EBC=(2*Lovibond)-1.2

Why Use Dark Rock Malts and Hops?

The Dark Rock Brewing team are passionate about producing the best quality beers. Their mission is to help you to "Master your Craft" and brew the best craft beers possible. There is no reason why home-produced ales cannot be just as good as commercial equivalents. The key to success is having a wide selection of the best quality and freshest ingredients possible. Dark Rock ingredients are not just great value, they are of the highest quality and always supplied fresh. The team strive to constantly innovate and experiment with new styles and products. Dark Rock also markets top quality all-grain and partial--mash kits which receive fabulous reviews. They are experienced commercial brewers and supply craft micro-breweries and nano-breweries with equipment and ingredients. They also provide training and business development consultancy to scale-up breweries. This experience is channelled into equipping the home craft brewer with the "tools to compete". Use Dark Rock products and you can't go wrong. 


Customer Reviews 1 item(s)

Lowering PH
Used this to lower the PH of a Helles.
So far so good.
Review by Cameron / (Posted on 12/08/2020)
Lowering PH Used this to lower the PH of a Helles.
So far so good.
100/ 100
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