BIAB question???

[Allekornbrauer]

Hello I insulated my 10gal stainless steel brew pot for doing a future BIAB Brew. Well I fill it up with 5gal of water an heated that to 152f an put the lit on an cover the lit an pot with two comforters an set my timer at 90min an after the 90min I loss 9f now is this a normal temp loss over 90min yes I know it was just water an with grain’s an water there a lot more thermal mass aka hold mashing temperature better...

 

[wilserbrewer]

That’s fine, no need for anymore practice.
Next time heat 7 gal to 160 and add 10 lbs of grain

 

[RM-MN]

Mill your grain fine for BIAB and forget about heat loss. Conversion will be over before heat loss is any concern.

 

[McKnuckle]

Inside this blanket is an insulated kettle with a mash cap on top of the grain (1” rigid foam insulation). It loses about 4°F per hour. Totally fine for mashing.