Imperial Stout (reiterated mashing) (1 ratings)

All Grain Recipe

Submitted By: KevinO (Shared)
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Brewer: Kevin OGarra
Batch Size: 6.60 galStyle: Imperial Stout (20C)
Boil Size: 7.40 galStyle Guide: BJCP 2015
Color: 64.2 SRMEquipment: GrainFather_60min
Bitterness: 75.1 IBUsBoil Time: 60 min
Est OG: 1.103 (24.3° P)Mash Profile: Grainfather_SingleWmashOut_Med Body
Est FG: 1.029 SG (7.3° P)Fermentation: Kev Ale Fermentation
ABV: 10.0%Taste Rating: 35.0

Ingredients
Amount Name Type #
1.20 g Gypsum (Calcium Sulfate) (Mash 60 min) Misc 1
1.10 g Epsom Salt (MgSO4) (Mash 60 min) Misc 2
1.00 g Chalk (Mash 60 min) Misc 3
19 lbs 14.45 oz Malteurop Ale Malt (2.5 SRM) Grain 4
1 lbs 1.85 oz Caramel/Crystal Malt - 65L (Bairds) (53.3 SRM) Grain 5
1 lbs 0.16 oz Gladfield Light Chocolate Malt (515.2 SRM) Grain 6
14.46 oz Gladfield Roast Barley (659.9 SRM) Grain 7
12.56 oz Black Malt (Bairds) (659.9 SRM) Grain 8
10.79 oz Wheat, Flaked (1.6 SRM) Grain 9
10.72 oz Rye Malt (4.6 SRM) Grain 10
2.82 oz Chinook [10.5%] - Boil 60 min Hops 11
5.00 g Carrageenan (Boil 15 min) Misc 12
1.76 oz Centennial [11.2%] - Boil 15 min Hops 13
0.71 oz Chinook [10.5%] - Boil 15 min Hops 14
5.00 g Yeast Nutrient (Boil 15 min) Misc 15
1.06 oz Centennial [11.2%] - Boil 5 min Hops 16
3 pkgs New World Strong Ale (Mangrove Jack's #M42) Yeast 17

Taste Notes

1st mash 20 ltrs @ 6kg. second mash needs 18 litres @5.69kg, then top up to 30ltrs for boil Ended up taking a big hit on effiencies. Taste - Superb. Deep black colour, dark brown creamy head, that sticks like glue to the glass. Aroma of Chocolate, black malts, and hint of raisins. Flavour, good balance, nice creamy mouth feel. Cocoa, and esperesso notes. Very nice beer. Would be worth doing on a smaller batch.

Notes

Re-iterated mash - half at a time. 60 min mash per session. Added 6kg pale malt, mashed 60mins. sparged with 4 litres 75c water. mash temp still 65c at end. added remainder malt into approx 19L wort, mashed at 65c for a further 60mins. Mash out at 75c for 10 min. Sparge to reach 30ltr mark. Added remaining centennial at flameout, just for the hell of it.

Ratings

by KevinO

Really good tasting beer. Not great efficiency's with re-iterated mashing, but a really great beer. Worth it.