Full Boil vs. Partial boil Hops utilization

BearsWickedBrew · Nov 14, 2008

Awesome. Thanks for the explanation homebrewer 99.

Grinder12000 · Nov 14, 2008

SO - if I take a gravity reading preboil (after mash and extract additions) and it is 1.040ish - I'm good to go! otherwise tweak. thanks

Grinder12000 · Nov 14, 2008

The answer!!! The Texas two Step!!

Podcast about 1/2 way through.

Brew 1/2 of you batch with 1/2 of your ingredients - cool it and pitch the yeast. THEN - brew the 2nd half of you batch, col it and combine it with the 1st batch.

Another way is as mentioned - brew 1/2 the batch but use only 1/2 the extract - as mentioned try to get the OG at 1.040. Hop utilization wiltt be perfect - the PROBLEM is that then you dilute it and your hops will be cut in half.

It is not mentioned what happens of you use twice the amount of hops in the 1/2 boil.

This is why IPA's are very hard to make in a partial batch.

BarleyWater · Nov 14, 2008

Grinder12000 said:
It is not mentioned what happens of you use twice the amount of hops in the 1/2 boil.

This is why IPA's are very hard to make in a partial batch.

You will get twice the IBUs up to 100, after that it's just adding vegetable matter to your boil pot. Determine how much flavor and aroma additions there should be, and add to your bittering addition to achieve the desired IBUs.

This is why I got a turkey fryer and a big kettle, my IPAs sucked..

Grinder12000 · Nov 14, 2008

Yea - turkey fryer and a big kettle AND a wort chiller!

Kitchi Gumee · Nov 16, 2008

Anybody know if Beer Calculus is any good for this calculation? It takes into account the boil size, and when I just dropped a recipe from 3g boil to 2.5g boil it dropped the IBU a few points. I also entered the hops first, then the malt. It showed the IBU dropping as I added malt. All of this makes me think that maybe it is a good toil for those concerned about this. ANy thoughts?

Grinder12000 · Nov 16, 2008

If it is ANY help - I partial boil and will do the late extract addition. What this does is give me a GOOD hops utilization for that 2.5g boil. PROBLEM is then dilution which cuts it in half. So - I'm upping the hops from 1oz to 1.5oz oo my stout today. I think the more hops you are using the bigger problem is it.