Late DME additions???

[dirtbikejunkie]

2) Make sure that your top up water is dechlorinated (boil water too). Campden tabs are a great way to ensure this. 1 aspirin sized camden tablet will treat 20 gallons of water. 1/4 is enough to treat 5. The majority of the phenolic off flavors I encounter when judging competitions is from folks topping up with water straight out of the tap. Don't fall into that trap.HTH-

are you saying the cholorinated water used to top off causes phenolic off flavor?

[spiderwrangler]

Not necessarily phenolic flavors, which can be caused by a number of things, but chlrophenols witch are formed by an interaction between chlorine and phenol production.

[iophon]

....and greater hop utilization...

This is incorrect. Utilization is not correlated to gravity.

[spiderwrangler]

According to.....?

"hop utilization decreases with increasing wort gravity. The higher concentration of sugars makes it more difficult for the isomerized alpha acids to dissolve." John Palmer says so.

http://www.howtobrew.com/section1/chapter5-5.html

[BDawg]

2) Make sure that your top up water is dechlorinated (boil water too). Campden tabs are a great way to ensure this. 1 aspirin sized camden tablet will treat 20 gallons of water. 1/4 is enough to treat 5. The majority of the phenolic off flavors I encounter when judging competitions is from folks topping up with water straight out of the tap. Don't fall into that trap.HTH-

are you saying the cholorinated water used to top off causes phenolic off flavor?

Yes. I find this to be the case quite often.

[siwelwerd]

Utilization is not correlated to gravity.

[citation needed]

Ray Daniels, among others, disagree with you.

[iophon]

Here is a pretty decent run down:

http://www.homebrewtalk.com/f14/hop-utilization-178668/

[siwelwerd]

Here is a pretty decent run down:

http://www.homebrewtalk.com/f14/hop-utilization-178668/

The primary source seems to be this: http://www.asbcnet.org/journal/abstract ... /47-14.htm, of which I am unable to access the full text of the article. Would love to be able to read it. If this research is the accepted standard, why do several standard homebrewing references state there is a correlation?