Does adding extract late in boil affect quality? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Extract Brewing > Does adding extract late in boil affect quality?

Thread Tools
Old 03-06-2010, 04:44 AM   #1
Feb 2010
Boston, MA
Posts: 58

Hello Everybody

So Ive seen a lot of recipes that call for adding some DME or LME in the last 15 minutes of the boil. I assume this is so you dont have to use as much hops to get a certain IBU level. Is there a downside to doing this? I feel like there must be.


Reply With Quote
Old 03-06-2010, 05:20 AM   #2
Feb 2008
South Dakota
Posts: 305
Liked 3 Times on 3 Posts

Late extract addition can also help keep your beer a lighter color as extract brews can tend to be darker than one would like. No downsides to the late additions that I'm aware of.

edit: I guess a downside could be an overly bitter beer if you don't adjust your bittering hops.
A general guideline when doing late extract additions is to cut your bittering hops by 25% or so.

Reply With Quote
Old 03-06-2010, 05:37 AM   #3
Feb 2010
Melbourne, AU
Posts: 232
Liked 4 Times on 4 Posts

Now downisde because the extract doesn't need to be boiled for an hour. 10 minutes or so is enough to sterilise it if that concerns you and just being in 100dge C wort will help dissolve it. That's the main reasons you add it to a boil at all (presuming the boil is already around 1040).

Of course it affects gravity though - gravity is a measure of the density of liquid and sugars affect the density of liquid. You are adding more sugar to liquid - gravity goes up. You should take that into account in the recipe development so if your recipe is significantly above 1040, you make up the wort to 1040 then add the remainder in at the end. If it's around the 1040-1050 range mark just boil with it all. Anything up to 1050 I wouldn't worry.

Reply With Quote
Old 03-08-2010, 03:52 AM   #4
Sep 2008
Lafayette, CO
Posts: 494
Liked 2 Times on 2 Posts

Just to add to what Tom777 said, the more extract that is in your boil for the full duration, the more likely you are to carmelize some extract. This can possibly effect final gravity, and of course color and flavor as stated above. Out of habit and for repeatablility (sp?), I always do late additions, and it saves hops!
Kelpie Home Brewery, Lafayette Colorado
Primary: Creek Dog Stout x2, Two Dogs IPA, Grinning Kelpie Wheat
Secondary: empty :(
In Bottles: Belgian Wheat

Reply With Quote
Old 03-08-2010, 04:25 AM   #5
homebrewer_99's Avatar
Feb 2005
Atkinson (near the Quad Cities), IL
Posts: 17,792
Liked 133 Times on 99 Posts

Papazian has a Hop Utilization Chart in TCJOHB that recommends keeping your lbs of DME equal to your gals of water; i.e., 1 gal and 1 lb, 2 gals 2 lbs, etc., for maximum bitterness extraction.

Deviating from that one way or the other means you should adjust your hops. Too much malt equals a dense wort and low hop bitterness extraction, too much water tends to make not only more bitter, but gives it a harsh (versus mellow) bitterness, IMO.

I boil for 45 mins and turn the heat off. Then add 1 lb od DME at a time and dissolve it before adding the next pound. Then I let it sit for the last 15 mins.

I've been using this formula since 1994.
HB Bill

Reply With Quote
Old 03-08-2010, 12:26 PM   #6
Mar 2010
Posts: 211
Liked 2 Times on 2 Posts

Interesting. When I get home next month I will try this as well. Thanks for the input!

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
? About adding extract late mhochman Beginners Beer Brewing Forum 18 01-16-2010 01:19 AM
Beginner ?s- Adding extract late in a boil MattStanley Beginners Beer Brewing Forum 10 12-12-2009 03:51 PM
Adding Extract Late daveooph131 Beginners Beer Brewing Forum 9 04-18-2009 04:01 PM
Increasing OG by Adding Extract Late-Boil petrolero Extract Brewing 0 08-11-2008 11:38 PM
Adding extract late in boil Proofman Beginners Beer Brewing Forum 4 03-20-2007 04:33 PM

Forum Jump