Selasa, 15 Juni 2021

Pilot brewing lessons and recipes, storing yeast starters and more

Brew Day Bulletin
Dear Homebrewer,
Tasting critically isn't only for judges. Two experts in this field share their advice for homebrewers who want to better their evaluation skills [Digital Members].
Homebrewers can learn a lot from the pilot systems [Free] used by commercial brewers as the brewhouse starting point. Case in point: these pilot clone recipes [Free] from Odell Brewing Co., Worthy Brewing Company, Summit Brewing Co., and O.H.S.O. Brewery. 
Some may call Fair State Brewing Cooperative & Arbeiter Brewing Co.'s Bibbidy Drippidy Hop clone recipe [Digital Members] a "zero IBU IPA" as no hops are added in the boil. 
The first Oktoberfest took place in 1810. Continue the tradition with this Hofbrauhaus Oktoberfestbier clone recipe [Free]. 
Build an inline refractometer to get real-time density readings [Free] and a heat shield to retain that wasted energy [Digital Members].
Mr. Wizard shares a few tips on storing yeast starters [Free] and Irish moss substitutes [Digital Members].
Cheers!
Brad Ring
Publisher
Read & Brew: Free Content For All
Recipe
Hofbrauhaus Oktoberfestbier clone

The first Oktoberfest took place in 1810, to celebrate the wedding of the Bavarian prince Ludwig to Princess Therese. All of the people of Munich were invited to celebrate with them in the fields by the front gates of the city. The fields were nicknamed Theresienwiese, or "Theresa's fields," in honor of the princess. The festival has been celebrated every year since then. Oktoberfest beers traditionally are brewed in the spring, lagered during the warm summer months and served in September during the annual festival.

(5 gallons/19 L, extract with grains)
OG = 1.062  FG = 1.014
IBU = 23  SRM = 8  ABV = 6.3%

Ingredients
1 lb. (0.45 kg) German Munich malt
4 oz. (113 g) Belgian caramel Munich malt
3.75 lbs. (1.7 kg) Muntons extra light dried malt extract

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Happy Father's Day! Gift and regular subscriptions for Digital Memberships and print subscriptions are half-off your first year.** Use code Dad21 at checkout
Article
Pilot Brewing Lessons & Recipes

In order to think big, you need to start small. That is the prevalent thinking for many of today's commercial brewers who frequently utilize pilot systems as the brewhouse starting point. Pilot systems range in size from 10 gallons (38 L) to 8 barrels (1 barrel = 31 gallons/117 L) with numerous variations in between, and often commercial brewers are experimenting on systems that wouldn't look out of place in a homebrewer's garage.

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Ask Mr. Wizard
Storing yeast starters

Q After making a starter is it possible to store it long term? I have some leftover London Ale yeast sitting in my fridge . . . how long will that last? If I make a yeast starter, what could I do to make it last?


A Reusing yeast is certainly one of those things that makes sense from a cost-savings perspective. Indeed, brewers have been harvesting yeast crops at the end of fermentation, temporarily storing the yeast and re-pitching it into subsequent batches for a very, very long time.
 

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Project
Inline Refractometer: Getting real-time density readings

The idea of this project was to measure the Brix of a wort inline during recirculations and transfer during the various processes of a brew day. For example it could be used as part of the sparging process, so that the sparge can be stopped when the standard gravity (SG) approaches 1.008 (2.1 °Brix) to prevent the extraction of tannins. I can measure the mash's first running's to be able to see if the conversion efficiency was higher or lower than expected. 

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Recipe
Fair State Brewing Cooperative & Arbeiter Brewing Co.'s Bibbidy Drippidy Hop clone

Some may call this recipe a "zero IBU IPA" as no hops are added in the boil. Of course, whirlpool and dip hop additions will contribute both bitterness and IBUs when measured using a spectrophotometer.

(5 gallons/19 L, all-grain) 
OG = 1.059  FG = 1.010
IBU = 59  SRM = 4  ABV = 6.6%

Ingredients
8.5 lbs. (3.9 kg) Rahr North Star PilsTM malt
3 lbs. (1.4 kg) Rahr white wheat malt
1.25 lbs. (0.57 kg) Simpsons malted oats
 

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Article
Beer Evaluation: Tips from the Pros

Tasting critically isn't only for judges. In fact, it greatly benefits all brewers. Being able to evaluate changes to recipes, techniques, and fermentation dynamics is the best way to determine what works and doesn't work. Two experts in this field share their advice for homebrewers who want to better their evaluation skills.

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Ask Mr. Wizard
Irish Moss Substitutes

I have read about using Irish moss in brewing to clarify beer but I have not tried it yet. I am curious, however, as to whether or not I could use other sea vegetables in the same way or as a nutrient boost in my homebrews. Would there be any advantage or disadvantage to adding kelp/kombu or alaria/wakame (or any of the other number of seaweeds) to the wort? Would it matter when I added it?


Irish moss is the general name given to the red algae Chondrus crispus that grows in the Atlantic ocean off the shores of Europe and North America. The reason that Irish moss works as a fining agent is that it has a high density of negative charges on its surface and when added to wort it binds with certain proteins that have positive surface charges. Like many things added to beer I often wondered when some brewer decided to add this "seaweed" to the kettle . . . it probably was the same brewer who added fish swim bladders to beer!
 

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Project
Heat Shield: Retain that wasted energy

As an engineer by trade, I find that I have a natural tendency to improve upon things to make them more efficient, cheaper, and faster. If you've seen Dilbert's "the Knack" clip, you get the idea. Brewing, with its numerous processes and large number of variables, will likely provide me with years and years of tinkering.

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