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About John Snyder
Expertise
I will answer questions about the brewing of beer,it`s process flow,quality control,and raw materials used in the brewing process.Brewing calculations, recipe formulations,and solving of brewing,fermenting, storage and finishing problems,will also be answered

Experience
41 years in the beer industry,with 20 years as Brewmaster;10 years as brewing Chemist

Education/Credentials
B.S.in chemistry.Brewmasters degree.Sensory training

 
   

You are here:  Experts > Hobbies > Beer/Home Brewing > Beer > priming-krausening

Beer - priming-krausening


Expert: John Snyder - 1/17/2007

Question
Would you please tell me more about the answer you gave on 05/28/2004,on the same subject:
"What you are looking at is a process called Kraeusening,that involves adding freshly fermenting wort into a finished beer.This method is more time consuming,and requires some specific analysis,of gravity,and yeast counts.In this process the carbonation period is significantly less.

here is a simple method of krausening(elimination of priming sugars)

1--clean and sterilze several mason jars,or large beer bottles and lids
2--take some of your wort as it reaches the end of the boil
,just prior to adding the finishing hops,and transfer the needed amount of the boiling wort to the jar,or bottle(empty the hot water first)and cap immediately.Let the wort cool to under 90 degree F and then refrigerate until your batch is ready for bottling
3---At bottling time,boil the saved wort for 10 mins.and chill,then add to the fermented beer and bottle.It is important to use the proper amount of unfermented wort for the particular beer you are priming

HERE IS A ROUGH GUIDELINE:based on 5 gallon batches.

Original gravity reading:     Amount of unfermented wort:
      1.030                          2 quarts
      1.040                          1 1/2 quarts
      1.050                          1 1/4 quarts
      1.060                          1 quart
      1.070                          3 1/2 cups
      1.080                          3 cups
      1.090                          2 2/3 cups
      1.100                          2 1/2 cups

This should accomplish the type of priming you want to do.
Priming is not necessary in a true krausening,but is complicated.The home process that is outlined above should serve you well.
              good luck,happy brewing
                    john "
I would like to use this method,adding unfermented stored wort prior to bottling-but you have mentioned yeast as well in your today's answer.Wort+yeast=fermentation=pressure;I don't want my bottles to explode.There is still dormant yeast in green beer-is that sufficient to get carbonization going,nice and slow.If it is not, how much yeast to add to your method described in 2004,when beer is to be stored in plain bottles.
I understand that krausening is adding fermenting wort,which requires controlled environment. Now,adding unfermented wort AND yeast you have mentioned,gives the same effect as adding fermenting wort.Would you please explain me,in more details,methods and effects of efficient priming,and yeast use,in this stage of homebrewing.Thank you kindly,Renata

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The text above is a follow-up to ...

-----Question-----
Dear Mr.Snyder,in your answer on how to prime green beer, by using stored wort,there is no mention of using any yeast.What is the difference if wort only, or wort plus yeast is used.My goal is to get the best,natural carbonation faster,and don't have suitable space for extended lagering.Thank you kindly,Renata N, Vancouver,BC,Canada
-----Answer-----
Krausening is adding fermenting wort,that still has very active yeast,and fermentable sugars left,to a green beer to finish fermenting out.During this process,the green beer is kept under pressure,and the sugar that is fermented out by the yeast gives off CO2,and is absorbed into the green beer,carbonating it.

Priming beer is adding sugar,and some yeast,to the finished beer at bottling.It normally takes 2 weeks to carbonate at 65-75F,for yeast to consume the priming sugar,forming CO2

hope this answers your question.Any further questions,I will be glad to answer

Answer
the method,i described above will work fine,and no problem with exploding bottles,if done correctly.Carbonation in this manner is slow,as it needs to be,so don't try to hurry it along.My comments about adding yeast,plus sugar at priming was aimed to protect those home brewers who may have filtered out their yeast,or didn't carry it over into their bottles,leaving it behind in the sediment.One final note,when transferring the unfermented wort,shake it somewhat to introduce a little air at the transfer.Yeast needs some oxygen to start fermentation,as the fermented beer is in a CO2 atmosphere.Again i will be glad to assist with any problems

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