General Category > All Grain Brewing
Hochkurz double decoction AND a really long boil for an impy stout?
morticaixavier:
Yeah I don't think hopfen is saying you can't do it, it's just going to take a lot of water so you will have to boil a long time to get your post boil volume.
I know I can get around 1.110 with about 30 lbs grain to a 5 gallon batch, first runnings only but it does take a 120 minute boil. It's also only around 50% efficiency if you don't do a second runnings beer.
nateo:
I would consider doing incremental feedings. Osmotic pressure starts to be an issue around 1.120.
If I were going to brew a beer that big, I'd start it at whatever OG I could easily get, let it ferment a good bit, then add malt extract to make up the difference in gravity. It will be kinder for your yeast and easier to achieve.
I would also use a good amount of simple sugar, maybe 10-15% of fermentables. Attenuation is going to be your biggest issue with a beer like that.
Here's the link Hopfen was talking about. That page was a godsend when I started making bigger beers. Before I found that my big beers sucked.
http://beerdujour.com/Howtobrewabigbeer.htm
phillamb168:
Hey, good stuff guys, thank you! I've never, ever brewed anything above about 1.065 so this is new territory for me.
phillamb168:
Re yeast, I've got a 1L starter clearing in the fridge and will boost that to a 5L starter - I was considering doing two, actually, one from the US05 pack (that's where the 1L came from) and one that's a transfer from a bottle of Old somethingorother I have from Stone - can't remember the name but it's their barleywine. Would that work? Is a 5L starter enough for 10 gal, or should I do double?
morticaixavier:
--- Quote from: phillamb168 on March 13, 2012, 12:46:42 PM ---Re yeast, I've got a 1L starter clearing in the fridge and will boost that to a 5L starter - I was considering doing two, actually, one from the US05 pack (that's where the 1L came from) and one that's a transfer from a bottle of Old somethingorother I have from Stone - can't remember the name but it's their barleywine. Would that work? Is a 5L starter enough for 10 gal, or should I do double?
--- End quote ---
yes more yeast!! Phil, if you have the time at all I would highly recommend knocking off a quick 5 gallon small beer with whatever yeast you want to use and use the cake. but I think that if you step up from 1L to 5L it will probably be okay, what does mr. malty say?
--- Quote from: nateo on March 13, 2012, 08:39:19 AM ---I would consider doing incremental feedings. Osmotic pressure starts to be an issue around 1.120.
--- End quote ---
I have always wondered about the whole incremental feeding thing, not understanding how it helps to feed incrementally when the net effect is the same level of alcohol. But if it's an issue of osmotic presure that makes sense to me. as the gravity goes down you can add more sugar without exceeding the presure threshold! thanks nateo!
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