Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > All-grain top-ups?
Reply
 
LinkBack Thread Tools
Old 08-22-2007, 05:27 PM   #1
brewitnow
Feedback Score: 0 reviews
 
brewitnow's Avatar
Recipes 
 
Join Date: Jul 2007
Location: Washington, DC
Posts: 85
Default All-grain top-ups?

I apologize if this is covered elsewhere. In reading threads I haven't seen it: What effects are there for topping up a small AG boil to make 5 gal batch? I've read for PM and extract and done it. But for AG? Here's specifically what I mean:

I just built my 10-gal MLT to go AG, but still only have a boil kettle that can handle 4-5 gal comfy. I am calculating for that size boil with my brew software, so grain amounts, etc should be covered and okay. For a 5-gal batch, I plan to top up what is needed after boil. Any deleterious effects/good/bad/indifferent? I will upgrade brewpot at some point, but not right now.

__________________

"I did not achieve this position in life by having some snot-nosed punk leave my cheese out in the wind!"
--------------------------------------------------------------------
Primary: empty like Bush's head.
Secondary: also empty
Conditioning: Eurotrash ale
Drinking: Simi Cider; Home Rule Hefe
Coming Attractions: DC High Property Tax Bitter; Old Throbbinghead

brewitnow is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 05:36 PM   #2
TheJadedDog
AFK ATM
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
TheJadedDog's Avatar
Recipes 
 
Join Date: Aug 2006
Location: People's Republic of Cambridge
Posts: 3,323
Liked 6 Times on 6 Posts

Default

This is why I am only able to go PM at the moment. My stove can only handle a 3 gallon boil, since I have to top-up I use DME to make up the rest of the fermentables.

I suppose you could make your wort higher gravity by mashing more grains so the top up dilutes it to the OG you want since you won't be as short in your boil as I am, maybe someone else can comment on whether this would work.

__________________
And now we go AG!

On Tap: Nadda
Primary: Nadda
Planning: Extra Special Bitter
TheJadedDog is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 05:38 PM   #3
Got Trub?
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2007
Location: Washington State
Posts: 1,538
Liked 7 Times on 5 Posts

Default

Your issues will be the same as for extract/PM (color, hop bitterness etc) with the additional one of efficiency. As your volume will be limited you won't be able to use as much sparge water to extract the maximum amount of sugar from your mash.

__________________
Got Trub? is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 05:38 PM   #4
bigben
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2006
Location: My House
Posts: 522
Default

The problem with doing a partial boil with an all grain bill is that you aren't able to do a complete mash/sparge.

If you can only boil 4 gallons, you will lose efficiency because you wont be able to use the proper amount of mash/sparge water.

For instance, if you have a 5 gallon recipe and 10lbs of grain...

10 x 1.25qts = 3.125 gallons of mash water

Lets say your first runnings is 2.125 gallons...Ideally you'd want to sparge with about 4 gallons of water to bring it to around 6 gallons total for your boil.

But if you can only boil 4-5 gallons, you will lose some efficiency due to lack of sparge water.

I hope I made sense.

__________________
bigben is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 05:40 PM   #5
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 2 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,109
Liked 1020 Times on 680 Posts
Likes Given: 28

Default

You're just going to lose effeciency which means you'll leave more sugars in the mash because you can't sparge enough to get them all out. If I were you, I'd pull out the normal 6-7 gallons for a 5 gallon back and split it between two pots.
You can also drain 5 gallons, boil that adding your hops. Then collect an additional 1.5 gallons by continuing to sparge and boil that without hop additions in a small pot. Use this to top up at the end. At least it's not 1.00 gravity water.

It's either that or you might want to scale your batches back to 3 gallons for now.

__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!

New Stuff?
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 05:50 PM   #6
brewitnow
Feedback Score: 0 reviews
 
brewitnow's Avatar
Recipes 
 
Join Date: Jul 2007
Location: Washington, DC
Posts: 85
Default

Split pot is what will work I think. Might be 4 gal in one, 2 gal in another, but hey, that'd work so long as i split my hops appropriately. Thanks!!

__________________

"I did not achieve this position in life by having some snot-nosed punk leave my cheese out in the wind!"
--------------------------------------------------------------------
Primary: empty like Bush's head.
Secondary: also empty
Conditioning: Eurotrash ale
Drinking: Simi Cider; Home Rule Hefe
Coming Attractions: DC High Property Tax Bitter; Old Throbbinghead

brewitnow is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 06:28 PM   #7
jdoiv
Feedback Score: 0 reviews
 
jdoiv's Avatar
Recipes 
 
Join Date: Mar 2007
Location: Nashville, TN
Posts: 1,149
Default

I don't think I would worry about splitting the hops. For the most even flavor, I would add the hops to the larger pot and just use the small pot to top off the fermenter. Why make it harder than it needs to be?

__________________
Drinking on the keg: BPA, Brown Ale, Dry Mead, Wee Heavy aged on Oak, CAP
Drinking in the Bottle:
Conditioning:
Fermenting:
Planning:
jdoiv is offline
 
Reply With Quote Quick reply to this message
Old 08-22-2007, 06:32 PM   #8
Evan!
Feedback Score: 0 reviews
 
Evan!'s Avatar
Recipes 
 
Join Date: Aug 2006
Location: Charlottesville, VA
Posts: 11,901
Liked 69 Times on 61 Posts
Likes Given: 1

Default

Quote:
Originally Posted by jdoiv
I don't think I would worry about splitting the hops. For the most even flavor, I would add the hops to the larger pot and just use the small pot to top off the fermenter. Why make it harder than it needs to be?
Better hop utilization, one would think...more molecules to bind with.

I do the split pot deal when necessary too. Someday I'd like to get a 10 gallon kettle...
__________________
MOSS HOLLOW BREWING CO.
Aristocratic Ales, Lascivious Lagers


.planned:
•Scottish 80/- •Sweet Stout •Roggenbier
.primary | bright:
98: Moss Hollow Soured '09 72: Oude Kriek 99: B-Weisse 102: Brett'd BDSA 104: Feat of Strength Helles Bock 105: Merkin Brown
.on tap | kegged:
XX: Moss Hollow Springs Sparkling Water 95: Gott Mit Uns German Pils 91b: Brown Willie's Oaked Abbey Ale 103: Merkin Stout
98: Yorkshire Special 100: Maple Porter 89: Cidre Saison 101: Steffiweizen '09 (#3)
Evan! is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Converting an all-grain recipe to extract+steeping grain Finn Extract Brewing 9 08-24-2010 11:55 PM
Convert this: All Grain Recipe to Extract/Specialty Grain Doc Robinson Beginners Beer Brewing Forum 3 10-13-2009 07:03 PM
base grain to specialty malt grain ratios DudeBrew All Grain & Partial Mash Brewing 7 02-08-2009 06:22 PM
Good Grain Absorption Factor and Water/Grain Ratio? Mr. Mojo Rising All Grain & Partial Mash Brewing 8 03-13-2008 05:28 PM
Question about steeping grain in extract/grain brew grez Extract Brewing 16 09-18-2006 03:37 PM