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Centennial Blonde – A blonde ale made with mostly lager malt,  hopefully I’ll get somewhere close to www.drinkmallinsons.co.uk ‘Centennial’, at least hop Flavour-wise.

Fermentables:
Lager Malt – 79.1%
Wheat Malt – 7.9%
Oat Malt – 7.8% (using up a part bag, should add some fake body)
CaraHell (Weyermann) – 5.3%

Hops:
Centennial Whole 11.5 % @ 60 mins – 25g – (FWH)
Centennial Whole 11.5 % @ 10 mins – 20g
Centennial Whole 11.5 % @ 0 mins – 30g – (20 minute Copper Stand with the boil just cooled a little)

Final Volume: 23 Litres
Original Gravity: 1.036 (I actually got about 1038-1040)
Final Gravity: 1.009
Alcohol Content: 3.5% ABV
Total Liquor: 32.1 Litres
Mash Liquor: 9.1 Litres
Mash Efficiency: 75 %
Bitterness: 36 EBU – I’ve set the hop utilisation in BeerEngine to 25% for this to see if things turn out a bit more realistic.
Colour: 5 EBC
Liquor Treatment: Gypsum 6.3g, Calcium Choride 6.3g, Epsom Salts 3.3g

Blended malts:
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The garage brewery Corner, I thought I’d add a bit of an overview of my setup:
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A few Centennial Hops, bag-ends from work are handy though this will last me for ages:
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The Mash, lost 2°c over about 70mins:
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Another view of the Brewery Corner, the other side of the garage is rather less tidy:
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First sparge running into the copper onto the First Wort Hops, Just over 77% Mash efficiency:
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Flameout hops going in:
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The Money shot, hydrometer says a bit above what the Refractometer said:
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All done and cleaned up in about 5 hours, Mashed in at 8.30am for 60mins, Batch Sparged, boiled for 60mins, Hop steep for 20mins, cooled, stood for 20mins then ran to fermenter and pitched Safale us-05 at 20°c

*Bottled 22nd Oct ’11 with 75g White Sugar – FG 1008 @ 18°c, tasting pretty good.

*Early taster was very nice last night, 27th Oct ’11, bitterness is much more believable with the 25% Hop utilisation figure and could maybe be set to 30% for subsequent brews. Though maybe one more brew at 25% with different hops and a higher IBU to double check.

Making my Immersion cooler:
I made the aluminium spacer strips to hold the coils about 5mm apart, the strips also let it sit nicely on the bottom of my stockpot boiler without interfering with the hop strainer.
I wound the 10 metres of 10mm Diameter copper around a small 15 litre bucket which left it quite neat then knocked up the ally strips at work last night, just had to add a short length of bent 15mm pipe to get the coils end points closer so I could bring the inlet/outlet pipe closer together so I can cable tie them when I’m done.
I have the hose connections pointing horizontal with 2x 10mm solder-ring reducers which fit nicely in the end of the garden hose to be jubilee clipped:



Soldered up and connected:
No leaks…

Cooling test Update:
Warming up, bits of pipe scum coming loose and floating…

On the boil:

The Cooling results are, from 100 Deg C:
7mins – 49 C
10mins – 39 C
15mins – 28 C
20mins – 23.6 C
25mins – 21 C
I had to get my stopwatch out and stirred the water at least every 2 minutes, the boil was of roughly 30 litres, I’ll only be brewing and cooling about 12 L in reality.
IC is nice and clean now ready for Saturdays brewday 🙂

I made a mini mash tun with False bottom, made out of a 15 Litre bucket, drum tap, Camping mats (2 layers, 3 on Lid with 2″ skirting), a pink plastic plate (2mm holes drilled), some copper fittings, a tank connector and a bit of PVC tube, and Duct tape 😉
Even though I already made a Thermos Coolbox mash Tun, I still want to experiment with small batches which means more brewing and ‘testing’ 🙄 of recipes 😉
The finished thing:

Inside:

The False bottom and bits of dodgily pushed together pipe:

Did a little heat loss test with hot water:

Time : : Temp
19.36 – 61.1 C
20.38 – 58.6 C
21.06 – 58.0 C
21.35 – 57.6 C

Ordered some Mash-able grains from BarleyBottom / Hope-&-Grape… 🙂

If it falls apart on first use I’ll be tipping the mash into the Coolbox to sparge and I’ve got a slight re-design in mind which won’t fall apart! 😉


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