This has got me thinking - can I produce a beer with the same level of flavour / body as the above, but with say half the ABV? Experiment time!
My recipe above was for a 3.4% highly hopped Amarillo beer, which is nicely underway. It was overnight mashed starting at 68C which fell to 54C in the morning at pH5.2. I used a highly attenuative brewery yeast (2nd generation originally from a bottle Hopback Summer Lightening). This gave me 85% attenuation in my Christmas brew.
The two key variables I can see that can be changed are the yeast and the mash temp.
1. Yeast â the Hopback yeast gave 85% attenuation, if I switch to say WLP002 this could drop to around 75% (according to my Googling
here).
2. Mash temp â raising this to 72C should increase the unfermentables by around 50% (again, according to my Googling
here). However there is a hit to Brewhouse efficiency of about 5%.
Now, Iâm thinking that maltyness/body comes from the residual sugars left in the beer after fermentation â so if we aim to keep these at the same level then the resulting beer should have a similar body.
Taking account the decreased attenuation, and the increase in unfermentables from 1 and 2 above, Iâve adjusted the AA% down from 85% to 70% in Brewmate. Iâve also adjusted the recipe to a) take account of what I have in stock and b) add some crystal for colour c) halve the brewlength as this is an experiment
So, on to hops â here I am not sure! Asalpaws says rein back the IBUs as lower residual sweetness, Rob Walker says maintain the body. I think the above maintains same level of body (not as high as 1010 but I think reasonable for a small beer at 1006).
I think Iâll maintain the same hopping regime, and see what happens. I think can cope with a beer thatâs too bitter more than one thatâs too sweet.
So â to action â I hope to be able to brew this one over the weekend, but need some WLP002. (Order to Malt Miller going in right away â hopefully will get it by Sat).
Any comments on my thoughts above?
Resulting recipe will hopefully give similar beer at 1.74%:
P09 Small Way (to Amarillo)
Standard/Ordinary Bitter
Recipe Specs
----------------
Batch Size (L): 27.5
Total Grain (kg): 2.200
Total Hops (g): 130.00
Original Gravity (OG): 1.019 (°P): 4.8
Final Gravity (FG): 1.006 (°P): 1.5
Alcohol by Volume (ABV): 1.74 %
Colour (SRM): 4.2 (EBC): 8.3
Bitterness (IBU): 27.5 (Average)
Brewhouse Efficiency (%): 75
Boil Time (Minutes): 90
Grain Bill
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1.936 kg Maris Otter Malt (Warminster) (88%)
0.110 kg Munich malt (5%)
0.110 kg Wheat Malt (5%)
0.044 kg Crystal malt (dark) (2%)
Hop Bill
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10.0 g Target Leaf (12% Alpha) @ 90 Minutes (First Wort) (0.4 g/L)
15.0 g Amarillo Leaf (9.4% Alpha) @ 15 Minutes (Boil) (0.5 g/L)
15.0 g Amarillo Leaf (9.4% Alpha) @ 10 Minutes (Boil) (0.5 g/L)
15.0 g Amarillo Leaf (9.4% Alpha) @ 5 Minutes (Boil) (0.5 g/L)
25.0 g Amarillo Leaf (9.4% Alpha) @ 20 Minutes (Aroma) (0.9 g/L)
50.0 g Amarillo Pellet (9.5% Alpha) @ 7 Days (Dry Hop) (1.8 g/L)
Misc Bill
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Single step Infusion at 72°C for 90 Minutes.
Fermented at 20°C with WLP002 - English Ale
Recipe Generated with
BrewMate