160 Pints of Stout - Double Mash

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Bru4u

Landlord.
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Jan 3, 2009
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Location
Peoples Republic of Cork
Time for a stout, I wanted to try and do somthing close to Murphys, a bit sweeter than G'ns.
Firstly the recipe.

11.5kg Pale Malt
3.5kg Flaked Barley
1.6kg Roasted Barley
2kg sugar (An Afterthought)

180g EKG 5.2%

Safale US-05.

I only had 1kg of flaked Barley so I decided to use raw rolled barley, like this

RolledBarley.jpg



This ment doing two mashes, with the raw barley, 2.5kg in with 500g of pale malt in the small pot, Acid rest at 32 deg for the Phytase, 50 deg protein rest for the proteolysis, 65 deg rest for diastase and finally 72 deg to convert the starch to dextrins, Alpha-amylase. Then this was brought up to the boil and rolled over for 30 min. I dont know if all these steps were needed but it's a lot less work than a triple decoction mash

Minimash bill with some salts

MiniMashGrainsSalt.jpg


And arriving at the first step
AcidRest.jpg


Meanwhile the main goods

Flaked Barley
FlakedBarley.jpg


Roasted barley
RoastedBarley.jpg


Small Mill
TheMill.jpg


Milling Bill
MilledBill.jpg


Hopping their way to their doom
MillingHoppingtotheirdoom.jpg


A pillow case full
MilledGoods.jpg


A view of the brewery with the kettle replaced with the minimash tun
BreweryDoubleMashing.jpg


All temps up for strike temp

StrikeTemps.jpg


The main mash doing its thang
JoinedMash.jpg


So after the minimash was complete it got added to the main mash and the kettle put back in it's rightful place
BikKettleBack.jpg


After mash completion the wort is recircd in preperation for sparging
RecircBeforeSparg.jpg


Some floculation, ignore the hydrometer reading as the temp is very high
Floculation.jpg


After sparging it got boilled for an hour and a half, hops added for an hour of boiling and the lot cooled to pitching temp and then pumped into the fermentor
CoolingKettle.jpg


Lots of aeration from a long drop
AeratedWort.jpg


I had planned to use Wyeast Whitbread 1099, however the starter failled, strange as the temp was spot on and built up to 5 ltr over 4 days, this is the second time I've been let down by these yeasts. It just stuck half way through its course, a waste of 500g of dried malt extract
SmallyeastBed.jpg


So US-05 to the rescue, don't tell it that it's now feb, I had no time to make a running starter so the 4 packs just got put straight in to the fv with the wort
SafaleUS05.jpg


Pitching temps correct, pitch at 23 and let the temp drop overnight to 18 and it's now bubbling away like a steam train
PitchTemps.jpg

I set the temp to 18 after that photo rather than the 17 showing.

A bin of waste malt which gets dug in to one of the veg patches, the birds and worms love it
WasteMalt.jpg


OG 1.052
OG1052.jpg


A close up of the false bottom and a few grains to show scale
FalseBotton.jpg


The Fermentor all tucked up for the week, after 3 days I'll raise the temp by 1 deg per day so it will finish out at 21 deg, I find this gives lovely clean beers
LockedDownfortheweek.jpg


I use 3/4" fittings which makes it easy for cleaning down and droping a tank quickly
Fittingsforcleaning.jpg


And last pic of the three monkeys posing and the kettle removed in the backround for cleaning
ThreePosers.jpg


Hope you enjoyed all the pics of me brewporn
Bru
 
Another great brewday post Bru :thumb:
Pity about the yeast but a good recovery :thumb:
 
I'm going to try and recover the yeast in the demi and build up a big starter, feck it, I hate wasting cash as it's so hard to come by at the moment.
Prob is, I use the fv to make starters as I can regulate the temp and place a demi in there, but as you can see it's ocupied, must think of a solution :hmm:
 
Looks technical and Heath-Robinson all at once :)
Hope it turns out nice :)
 
After tasting youngs Double Chocolate Stout (Mrs Bru has me driven demented over the stuff) I'm thinking about adding some quality Cocoa Powder, has anyone tried this, wondering how much to add and when, there will be 4 kegs in total so I can afford to play with one, I'll bottle condition about 10 ltr. Some Chocolate and some standard.
Your thoughts appreciated.
Bru
 
Either top notch Cocoa powder . . . or Chocolate extract as supplied by Lakeland. . . personally I would go with the chocolate extract
 

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