Category Archives: Enzymes

Brut IPA you say?

There is no disputing that the India Pale Ale or IPA is a staple that’s here to stay. From its humble origins as a practical way to ship beer across the Empire to our modern craft interpretations, IPA has fast become a mainstay of every quality beer emporium. Spurred by the current Pied Piper of brewing: hops, drinkers are fast becoming used to and acquiring a taste for this lupulin driven excitement, whether it be a DIPA, Farmhouse, Belgian, Traditional, Black or New England, to name but a few. In addition to which, this lupelin furore is showing no sign of stopping! Enter Brut IPA, the new kid on the block. So, could we now be entering the era of the Brut IPA? Recent trends witnessed here at Murphys would suggest so, that Brut IPA is fast becoming the must brew style of 2018.

Unlike the name might suggest, this beer style has no connection with the cheap aftershave still available at a discount price from your closest Superdrug! In fact, its namesake is much more sophisticated, tasteful and considerably more expensive per bottle. We are of course talking about Champagne or more accurately the scale used to describe the sweetness of Champagne.

Picture courtesy of dracaenawines.com

As you will see, Brut is the second driest champagne available and it’s this dry palate that is the key weapon in the arsenal of this revered style (oh yes, there are of course Extra Brut IPA’s being brewed too). What else makes this beer stand out? You guessed it, hops by the bucket load! Lots and lots of juicy, fruity hop flavours but all from late additions; nobody likes their beer to be extra dry and bitter. Original gravities for this style typically range from the gentle 1045 up to 1070 and remember to keep the malt grist pale and simple. Though to achieve true Brut status you’ll need a low final gravity.

Origins of many modern beer styles are often shrouded in mystery, hearsay and myth. In contrast the Brut IPA has a largely undisputed founding brewery, with San Francisco’s Social Brewing leading the way in late 2017.  In the brewing industry’s true spirit of collaboration, their brewer, Kim Sturdavant fast shared the secrets of this new quaffable success with fellow local brewers and it’s from that pocket of California that word has spread.

At the risk of stirring the pot…

During our discussions about the content of this blog post we realised that, since 2012 Murphy and Son have already been supplying a UK brewery to aid in the production of something very similar! St Austell Brewery’s Big Job is a multi-award winning Double IPA with a wort of OG 1057 which attenuates right down to 998.5 and 7.2% ABV, balanced by a large dry hop addition this seems bang on for a Brut IPA to us! We’ll leave that thought with you.

So, how do we Brut-up an IPA?

Most brewers are turning to the power of enzymes, more specifically Amyloglucosidase (AMG to you and me).  This enzyme acts by removing glucose from dextrins / oligosaccharides in a step by step manner, working along the non reducing end by hydrolysing both linear α -1,4 and branching α- 1,6 bonds.  The removal of these dextrins eliminates any residual body and sweetness in the beer whilst providing extra fermentable glucose for the yeast!

AMG can be added in the mash to boost fermentability and extract, however, brewers of Brut IPA’s are choosing to add it directly to chilled wort (3-8g per hl) with rates dependant on required rate of attenuation.  Using this method, production of super-attenuated Brut IPA is easy, and thus making a final gravity of close to and below 1000 is achievable.

Top tip: Why not consider using sugars to raise the gravity of your brew?  Dextrose monohydrate will raise the gravity without adding any further or non-fermentable sugars, helping keep the beer dry without adding body or colour.

Next time you are looking to brew an IPA why not consider going Brut?

To discuss the use of AMG or any of our other enzyme products please contact our technical team techsupport@murphyandson.co.uk, like to learn more about our technical team? Read our blog on who’s who and who’s new.

Headline image courtesy of http://doctorale.com/en/big-job-attention-hops-attacks/46137 on Flickr

Co-authored by Iain Kenny and Mat Henney

Lager, Lager, Lager

When some very enterprising German brewers decided to store their beer in the frozen Bavarian Alps through the summer time in the early nineteenth century, little did they know of the impact there new “Lager” creation would have on the world of beer.  Some of these brewers were so moved by the potential of this wonderous brew that they started to leave their Bavarian breweries to spread the word around Europe and refine this new brewing art.  Many on the continent were so moved by the potential of Lager and the Lagering technique that many brewing enterprises started making related products of their own giving rise to styles like the Red Lagers of Vienna.  Much credit also needs to be given to Bavarian brewer Josef Groll who, in 1842, took the brave step of heading to a little-known brewing town called Pilsen in the Czech Republic to try out his new lager recipe.  Following on from this original Pilsner (Pilsner Urquell), innovations and developments in the likes of glass bottle manufacture and refrigeration coupled with a good helping of migration meant lager quickly became a worldwide success.

Lager is as popular as ever and whether its Pilsner, Helles, Vienna Lager or Schwarzbier you are considering brewing, Murphy and Son is the place for everything you need for a flavoursome quality lager.

Liquor Treatment

Our much treasured, annual free of charge liquor analysis now includes a suggested liquor treatment for lager style beers as standard.  If you have not had you liquor checked for a while and you are a Murphys customer please send 50ml of untreated water to our lab for us to check out for you.

Our suggested lager treatment aims for a brewing liquor with adequate calcium for good brewing enzyme activity, yeast flocculation and oxalate and protein precipitation whilst mimicking the low sulphate and chloride levels of Munich and Pilsen for a crisp, light flavour.  This is best achieved with suitable additions of lactic acid to reduce alkalinity with low levels of calcium sulphate and calcium chloride to increase calcium ions.

Malt

Our new closer ties with Simpsons Malt means that we now have in stock ready for dispatch Finest Lager Malt (crushed).  This highest quality malt is slightly higher in Total Nitrogen and slightly under-modified so head / foam and mouthfeel will survive the lagering process. To add to this quality base malt, we can also supply a range of crystal malts, caramalt, wheat malt and Vienna malt (all crushed) direct from our warehouse.

Hops

Whether you are looking for traditional varieties of Noble Czech Saaz and German Hallertau hops, or looking to add a dry hop twist to your brew with new world hop pellets, we are very proud of our close relationship with Charles Faram which means we can supply the best hops around to suit your requirements.

Yeast

On the dried yeast front we are pleased to hold stock of Lallemand Diamond Lager Yeast and three different Fermentis Lager Yeasts.  We also supply wet yeast cultures from the National Collection of Yeast Cultures (NCYC) which houses a vast range of lager strains originating from all over the world which can add the precise character you are looking for.

Flavour control

Diacetyl and Sulphur flavours can be problematic in lagers to help keep things under control we have the perfect products to help.

When added to wort at the start of fermentation, the enzyme Alpha Acetolactate Decarboxylate (ALDC) acts on the diacetyl precursor alpha acetolactate converting it to acetoin.  If alpha acetolactate is not present diacetyl can’t be formed so no buttery off flavours in your beer and conditioning time can be reduced.

To help keep sulphur off flavours out of your beer, Murphys have developed two zetolite products for the job.  Zetolite 65, when added to wort at the start of fermentation will prevent the formation of sulphur off flavours whilst if you notice the undesirable sulphurous aromas in your fermented product, the addition of Zetolite 63 will stimulate your yeast to reduce H2S and DMS aromas during maturation.

Don’t forget…

…an exuberant bright appearance is important with lagers and at Murphys we carry a huge range of finings and stabilisers to help achieve the desirable crisp look from brewers clarex to Super F, Silica and PVPP products, the Murphys Technical team is on hand to get this just right for you.  PGA is also a handy product to help achieve a perfect looking head on dispense.

For further information on any of the products discussed or for general advice and trouble-shooting with lager brewing please contact the Murphys Technical Team.

We Sell Key Kegs!!!!

Author: Iain Kenny, Technical Sales Representative, Murphy & Son Ltd

Contact the technical team on techsupport@murphyandson.co.uk

Realco – Enzybrew 10 – No Hazard to the environment enzyme based detergent

We are now ready to launch a new product 

Enzybrew 10 an enzyme based cleaner. This product was on trial with our volunteers and we have received some really good feedback.

This product is an ideal alternative to a caustic based detergent and can be used as an all-in-one daily enzymatic cleaning product specially designed to clean the equipment used in microbreweries.

ENZYBREW 10 completely breaks down the organic soiling arising from traditional beer brewing, such as vegetable fibres, proteins, and starch (hops, yeast, malt flour, caramelised sugars, etc.). Ideal for cleaning fermenters, filters, heat exchangers and fermenting vessels, conditioning tanks, and boiling kettles, ENZYBREW 10 is an appropriate enzymatic cocktail providing safe and in-depth cleaning of equipment.

Sustainable Development – please click here for more information regarding enzyme based cleaning.

The price for this product is £6.26 per kg. The product comes in a 10 kg container. Recommended dosage rate: 0.5 to 2%.

If you are interested please contact our sales line 01159780111 or email sales@murphyandson.co.uk

If you require further information regarding this product please contact frances.maud@murphyandson.co.uk

Gluten Free Beer Frequently Asked Questions – Answered

Brewing Audit pgaLast year Murphy’s was inundated with queries regarding gluten free beers. We have seen a huge interest in brewers wanting to brew gluten free beers, brought on by the demands of their customers due to the increasing awareness and diagnosis of the autoimmune condition; Coeliac disease.

As most of you are aware, gluten is a protein found in wheat, barley and rye and most of these are unavoidable ingredients when producing a good beer.

The most frequently ask questions we are receiving from this topic are:

Q: Are there any malts and grains available that are Gluten Free?

A: There are gluten-free grains, including sorghum, buckwheat, quinoa, rice and corn. Gluten-free malts are not readily available in the UK and unfortunately Murphy’s do not stock any.

Q: Due to protein elimination during mashing, boiling, fermentation and maturation does the final product really contain enough gluten to cause unwanted reactions in Coeliacs?

A: It has been suggested that an intake of less than 10 mg per day is recommended to avoid negative effects. However accurate measuring is vital to produce a safe beer for Coeliacs. Please take a look at the following article written by Sylvie Van Zandycke, this useful article covers, gluten proteins in grains and beer, measuring gluten in beer and levels of gluten in commercial beers.

Please click on the following link for the article:

http://sp1.actemarketing.com/CampResource/5L13AQ2HEOEAZ8TY/4/text.pdf

Q: Are there any processing aids that can be used to reduce the gluten levels?

A: It has been observed through research that the enzyme used for chill haze reduction/elimination, Brewers Clarex or Brewers Clarity(same product, but different pack size), has been known to reduce the levels of gluten in beer. With a small addition of this product during fermentation, this enzyme can cleave the proline and glutamin amino acids that are responsible for causing unwanted reactions in gluten-intolerant people.  With the help from Sylvie Van Zandycke’s article, and our Brewers Clarex tech sheet hopefully you can understand the benefits of this product.

Please click the following for the tech sheet:

http://sp1.actemarketing.com/CampResource/5L13AQ2HEOEAZ8TY/5/text.pdf

If you wish to purchase this product please do not hesitate to contact us.

Q: How can we find out how much gluten is in our final product?

RIDASCREEN® Gliadin competitive (Art. No. R7021) is used for the analysis of fermented and hydrolysed food (e.g. beer, starch syrup, starch, malt extract, sourdough, soy sauce) which are declared as “gluten-free”. Here at Murphy’s for just £101.89, we can provide a service, to help you carry out your gluten analysis test. This services has a 7 day turn around.  If you are interested please contact us. If you would like multiple samples (3 to 9 samples £64.53, 10 or more the price will be £54.34).