Monday, 29 August 2022

DRYBROUGH & CO : 40 /- B 1906

 How Do All ,

Apologies for the lack of posts recently ; I`ve been finishing an analysis project of a Yorkshire brewery`s Brewing Book from the pre Great War era , more of this soon !!! 
(The sole surviving Brewing Production Record to my knowledge  

Anyway , enough badinage , Here`s another superb recipe from an Edinburgh brewery , 
 Drybrough & Co Ltd at Craigmillar , which was built in the early 1890`s on a greenfield site .
Sadly none of the  early ( Pre 1906 ) Drybrough brewing records have survived in public archive from the company`s operations Tollbooth Wynd or , after the move to the North Back of Cannongate in 1782 , or after the  expansion into the neighbouring Craigend Brewery in 1874 , so if you`re able to help locate these rec ords ( If they Survive ) please get in touch , I`d love to hear from you .

This recipe comes from the Drybrough & Co Brewing Book 1906 - 1910  @ D 6 / 1 / 1 / 1 ; Held in the internationally important Scottish Brewing Archive at  Glasgow University Special Collections & Archives , Thurso St .

This recipe C Edd Mather 2022 

               ANY AND ALL COMMERCIAL PRODUCTION RIGHTS RESERVED TO 
                                  DRYBROUGH & Co Ltd and their Successors in title .

         THIS RECIPE FOR 24.750 Wort Litres to Copper @ 1.040 ; 75 % Mash Efficiency

Drybough & Co Ltd 
Craigmillar Brewery
Duddingston Rd
Edinburgh 
Label photo Courtesy of Keith Osborne 


                                                                  40 / - B 
                                              Thursday 13 Th September 1903 
                                                        Brew Nos : 49 & 50 
               Original Gravity : 1.043 Racking Gravity 1.012 Final Gravity : 1.009 
                                               I  B  U  : 22      A  B  V  : 4 . 5 % 

                                                          MALTS   &   ADJUNCTS 
Crafty Maltsters 
                           Pop`s Pale Ale Malt @ 6.5 ebc 16.75 % = 0.730 Kg 
                           Annat                                         20.25 % = 0.880 Kg
Malting Company of Ireland 
                            Irish Ale Malt          @ 6.5 ebc 27.75 % = 1.200 Kg 
Simpson`s Malt 
                            Best Pale Ale Malt  @ 4.5 ebc 19.5   % = 0.880 Kg 

FLAKED RICE       @ 9.5  % = 0.395 Kg
FLAKED MAIZE   @ 6.25 % = 0.265 Kg 

                                            MASHING , SPARGING & COLLECTION 
               Use an Edinburgh Liquor / Mild Burtonisation Levels ( 2/3 - 1/2 Burton Salts Level ) 
Thgoroughly Pre Warm the Mash Tun to 90 c - 10 Minutes BEFORE Goods In ; Ensuring that the Liquor is at least 1.5 " ABOVE PLATES / Filter Bed .
                                 1  St Mash Heat :  64.5 c   At        0 - + 120 Minutes = 11.600 Litres 
                                 2 Nd Mash Heat :  68.5 c  At + 120 - + 150 Minutes = 10.000 Litres 
At 150 Minutes / Taps , Clear Wort by Return OVER the Mash , then ONCE CLEAR & BRIGHT ;
Allow to the Copper , then AFTER 10 Minutes of Clear Wort ( Slow initial Run Of rate ) ,
SPARGE : At  78 - 76 c = 19.280 Litres , AT at Gravity of 1.004 , STOP TAPS and COLLECT WORT.
   At COLLECTION ; Add Liquor to 1.039.75 , then CONDENSE to 24.750 Wort Litres in Copper.

NB : Remove scum from Wort Surface as much as possible when Condensing , BEFORE the 
First Hop Charge @ Let Off - 125 Minutes .

                                                                     SUGARS 
             1 St Sugar Charge      No 1 Invert  @  1.002.5 = 5.82 % = 0.240 Kg 
             2 Nd Sugar Charge    No 2 Invert  @  1.002.5 = 5.82 % = 0.220 Kg 

                                                                      COPPER
A 2 Hour 5 Minute boil ON HOPS ; 1 St Charge @ Let Off - 125 Minutes , then at Let Off - 95 Mins,
ADD the 2 Nd Hop Charge to the Copper .
At Let Off - 63 Minutes @ 1.046 ON 21.290 Wort Litres in Copper , ADD 9.315 Litres of LIQUOR ,
Reducing the Gravity to 1.032 , THEN ADD the 1 St Sugar Charge to 30.605 Wort Litres @ 1.032 .
AT Let Off - 33 Minutes ON 27.945 Wort Litres @ 1.037.5 , ADD the 2 Nd Sugar Charge ; Then ADD the 3 Rd Hop Charge .
AT Let Off - 12 Minutes , ADD Copper Finings , then AT Let Off , STAND 1/2 Hour ;
                          AFTER 1/2 HOUR STAND , COOL A S A P TO PITCHING HEAT .

                                                                HOPS 
                                 1  St Hop Charge : To 24.750 Wort Litres @ 1.040 
                Fuggles @ 5.5 % a/a = 14 g for 10 IBU   ;  Goldings @ 6 % a/a = 6 g for 5 IBU 

                                    2 Nd Hop Charge : To 22.890 Wort Litres @ 1.043 
                                       East Kent Goldings @ 6.5 % a/a = 5 g for 4 IBU 

                                     3 Rd Hop Charge : To 27.945 Wort Litres @ 1.040 
                                                  Goldings @ 6 % a/a = 4.5 g for 3 IBU 

RACKING HOPS : 3.5 g Goldings @ 6 % a/a TO 25.500 Beer Litres Racked Down 

                                                              YEAST
             Pitch with 70 g Weight of a Live Barm , EDINBURGH TYPE YEAST STRAIN
                                               To 25 . 850 Wort Litres in F V  1.043 

                                                              ATTENUATION
DAY   Hour   Heat      Gravity                                   REMARKS 
    1          P       15.5           1.043
    2         M       16             1.041  
               E        16.5          1.038
    3         M       18.5          1.035 
               E        18.5          1.031
    4         M       18.5          1.027
               E        19             1.023
    5         M       21             1.017
               E        18             1.014
    6         M       15             1.012
               E        15             1.012
    7         M       15             1.012       RACK & FINE ON HOPS = 25.500 Beer Litres .

STAND            : 2 Days 16 - 18 c 
CELLAR         : 2 Weeks at 10 c 
STILL;AGE    : 1 Week at 10 c then FULLY VENT and after18 - 24 Hours  , allowing the beer 
                           to both CLEAR and , CONDITION =  Quality Control time !!!! 

Cheers All and Happy Brewing ,

Edd 
Lancashire 
August 2022   

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