missed mash temp again

[sorefingers23]

im currently brewing a batch of kiss yer cousin kentucky common, this is the second time i brew this beer and the second time i miss my mash temp, but it only seems to happen on this recipe. it was at 149 at the start of the mash and after the 60 mins was at 141, i normally loose very little over the 60 mins mashing.

how will this affect my beer, and does any one know why this is happening

 

[jbunton]

Did you preheat your mash tun?

 

[sorefingers23]

yup, always do.
even put more hot water than i usually do, and let it heat longer, since i didnt want the same problem

 

[mongoose33]

Insulating the mash tun w/ a blanket or something similar?

If the mash tun isn't sealed relatively tightly you'll lose heat to steam loss.

 

[jbunton]

The temp of your grain will affect what your strike temp should be too

 

[EarthwormJim]

Is it less grain than you normally mash? Mashes with larger volume will hold temp better. Also, more headspace will allow more evaporation which will cool the mash, even though the lid is closed and the steam stays in the tun. I have started laying aluminum foil on top of the mash inside the cooler and it helps keep the temp where I want it.

 

[sorefingers23]

Yah I think it wasabout 4.5 lbs of grain, 2 lbs flaked corn and 1lb flaked rye

 

[Tribe Fan]

im currently brewing a batch of kiss yer cousin kentucky common,
how will this affect my beer,

Expect a dry beer with a high attenuation rate, nothing wrong with that. Could be a little more bitter than normal without some of the complex malt sugars to balance it out, depending on what style you were looking for.