First: Heirloom corn

[planohog]

Reference: viewtopic.php?p=7819933&hilit=heirloom#p7819933
I want to say this information is for experienced mash folks, this heirloom corn is expensive. your mileage may vary.
70/20/10
I mixed equal amount of red and blue, with wheat and two row.
Using the ice chest method, I was able to pour 212F water on,
then get it all mixed up then it was 183F add sebstar HTL closed lid.
4:42PM 183F,5:30 178F,8:40 170F ,10:12 167F ( iodine test passed )( turns out 238 minutes and - 0.6 degree per minute )
( about 4 hours ) .
Moved all of it to ferment bucket, added cooled water to match the new grains coming in , ( 1 tble of 88% citrix acid )
it was not long before I was 148F. 11:00 Added all the rest of the grains and sebstar GL.
12:00 118F, 03:30 added rest of prescribed cooled water 106F ph=5.6, 4:00 added BOF and nutrients,
SG 1.050 , made yeast bomb with the clear on top.
7am pitch+ bomb at 94F, it took off about 6 hours later. ( prob should wait to 80F ) . US-5 seems slow to take off.

[Homebrewer11777]

I assume you meant US-05. That seems like a very high pitching temperature rate for US-05. Manufacturer says it is ok up to about 78 but I usually ferment with that yeast at 68. If I can I will chill to below 68, about 65-66 and then pitch. Let it free rise to 68 and hold temperature at that point or possibly let it free rise again late in fermentation to get to 72 or so for diacetyl cleanup. That is my beer protocol with that yeast but see no reason it should be different for bourbon.

[planohog]

correct US-05 , I think i learned my lesson on it, I was worried i had wasted everything , there forawhile.

[Deplorable]

7am pitch+ bomb at 94F, it took off about 6 hours later. ( prob should wait to 80F ) . US-5 seems slow to take off.

94F is way hot for US-05. 77 is the top of its range and ideal temp is between 59 and 71F.
I usually pitch it at around 74 and I can just drape a couple of wool blankets over the barrels and it will stay above 55F for the duration of the ferment.

[GrumbleStill]

Any particular reason that you added nutrients to an all grain?

They are usually only needed for sugar based washes.

[Homebrewer11777]

What is BOF?

[planohog]

I add them as a additional help, if its not required it will not hurt anything. Great Question GrumbleStill.
BOF is a big old fan, blowing on the ferment bucket trying to get the temp down, to throw on yeast.
BOP is a big old pot, I do not have one due to the weight issue, I cant lift very much super hot water. Great Question HomeBrewer11777

[planohog]

Round #2 , i was able to be much closer to 80F for pitch time, the numbers were very close to #1, Repeatable is a good think in my book.