perplexing gravity issue

[storytyme]

Hello everyone. I am at my wits end trying to figure this one out. I have a gravity reading heading into the kettle at 1.066. My grain bill is 5 lb 2 row, 3 lb Vienna, 2 lb Munich, .5 lb of crystal 20L and .5 lb of crystal 60L. Total grain at 11lbs. Pre-boil volume is 6.6 gal. So why is the gravity so high? 110% efficiency is not possible. Help please............what am I missing here????

 

[JustLooking]

Temperature adjusted?

 

[storytyme]

Yep. 1.062 at 87 degrees......

 

[flars]

Could your boil off have been greater than estimated? What is the volume in your kettle?

 

[storytyme]

I am not done with the boil yet. The 1.066 was gravity heading into the boil.

 

[FlyDoctor]

It has to either be a measurement error on the grains weight, water volume, or error in the SG reading.


Sent from my iPhone using Home Brew

 

[storytyme]

It is probably a very dumb error and I will let everyone know when I find it. The only thing I did not have control over was the grain weight and crush. Homebrew shop did this, so maybe an error there? Is there any way to find out where the error was if it was a grain error. Is my grain bill too light or too heavy for the gravity??

 

[northcal]

It has to either be a measurement error on the grains weight, water volume, or error in the SG reading.

I'm going with user error!

 

[storytyme]

I'm going with user error!

I agree......just want to have that "oh duh" moment soon

 

[storytyme]

So I just took my OG and it is about where it should be at 1.054. This gives me a brewhouse efficiency of 67.4%. So things should be fine. I just wonder why my mash efficiency was so darn high?? Oh well........cheers!!

 

[chickypad]

I just wonder why my mash efficiency was so darn high??

It wasn't, you obviously had a measurement error since it is impossible to go down in gravity after boiling off water. Maybe you had stratification of the wort and were measuring mostly first runnings.

 

[storytyme]

It wasn't, you obviously had a measurement error since it is impossible to go down in gravity after boiling off water. Maybe you had stratification of the wort and were measuring mostly first runnings.

Great point. Never even thought of that. Its been a long fun day. Thank you everyone for all the thoughts. Time for a brew...