Newest Threads

tonyc318 · 01-28-2013, 01:55 AM

Quote:

Originally Posted by ishredthecello

I have an 11 gallon pot. this recipe had 18.5lbs of grain. would i be able to do the easy sparge method of mash, raise, let drip, heat water to 170, dip grains back in for 10 mins?

if i use the min of 1.25 qts p/lb, i'd need just about 5.75gallons there. plus what another 2gallons for loss? think i'd be able to fit about 8 gallons of water + the grains without it over flowing?

or could i do the 5.75gallons mash, pull grains out, add the other 2 gallons, get to 170, dip back in and sparge?

i tend to like to end with about 5.5gallons of final wort to ferment

This site has a calculator to figuring out you mash capacity. Called "can I mash it?"

http://www.rackers.org/calcs.shtml

ishredthecello · 01-28-2013, 03:33 PM

Quote:

Originally Posted by tonyc318

This site has a calculator to figuring out you mash capacity. Called "can I mash it?"

http://www.rackers.org/calcs.shtml

I saw this calculator but couldn't figure out how to factor in with Mashing Out.

jesserizzo · 01-28-2013, 06:03 PM

You made an error in measuring your volumes somewhere. Your mash + sparge water was 10.08 gallons and your ending volume is 10 gallons. Unless by "squeezed the grains" you mean "drove over the bag with a tank" this is not possible.

Also, why is your equipment loss set to 1.15 gallons? There is no mash tun dead space for BIAB, so where does that come from?

tonyc318 · 01-28-2013, 08:30 PM

Quote:

Originally Posted by ishredthecello

I saw this calculator but couldn't figure out how to factor in with Mashing Out.

Do you mash in your boil kettle? I do, and if I want to do a mashout, I hear up the pot to 168 by turning the burner on. I don't add anymore water.

ishredthecello · 01-28-2013, 08:41 PM

Quote:

Originally Posted by jesserizzo

You made an error in measuring your volumes somewhere. Your mash + sparge water was 10.08 gallons and your ending volume is 10 gallons. Unless by "squeezed the grains" you mean "drove over the bag with a tank" this is not possible.

Also, why is your equipment loss set to 1.15 gallons? There is no mash tun dead space for BIAB, so where does that come from?

I guess that calculator isn't for BIAB at all. Those were default values. This is the calculator...http://www.brew365.com/mash_sparge_water_calculator.php. Maybe it just doesn't translate well to BIAB.

But those are the values I used. I can't imagine I was able to squeeze every bit of the water back out that I possibly could. But sure enough when I dumped in the 'sparge' water, it filled my 44qt pot to the top.

I really just ended up with a lighter beer than I had planned, so it'll still be drinkable and all, just not what i was going for.

**Doed** · 01-28-2013, 09:02 PM

I agree with jesserizzo. I BIAB and usually your boil pot is your mash tun also, so there should be no dead space loss.

ishredthecello · 01-29-2013, 02:02 AM

BUSTIN' OUT SOME MATH:

(I have an 11 gallon kettle and 17.5lbs of grain)

6.56gal (Mash @ 152* for 60mins)
-2.60gal (Grain Absorption)
==================================
3.96gal (Wort)
+2.79gal (Question about this amount...)
==================================
6.75gal (full volume)
-1.25gal (boil off)
==================================
5.5 gallons (final volume)

**********************************

the 2.79gallons to bring my volume up question: do i...

1. Dump it into the 3.96gal of wort, then get temp up to 170*, lower grains back in, hold for 10 minutes, discard grains

or

2. heat it to some other temperature (if so what temp?) and pour over grains above the 3.96gal of wort?

Bonus: Should I be pressing/squeezing out the grains at any point?

I hope this helps illustrate my questions. I figure for this whole thing I'd need is a about 9.35 gallons of water.

**Doed** · 01-29-2013, 09:13 PM

Quote:

Originally Posted by ishredthecello

the 2.79gallons to bring my volume up question: do i...

1. Dump it into the 3.96gal of wort, then get temp up to 170*, lower grains back in, hold for 10 minutes, discard grains

or

2. heat it to some other temperature (if so what temp?) and pour over grains above the 3.96gal of wort?

Bonus: Should I be pressing/squeezing out the grains at any point?

1. This is a mash out, which I don't do anymore, someone else can answer.
2. This is a sparge. You can heat the water to about the same temp as your mash temp or to 170° OR you can just use unheated water. I have done this, many BIAB'ers do. You would pour the water through your grain to wash/rinse as much sugar as possible.

Bonus: After you remove your grains, squeeze, and after you sparge...if you sparge...then squeeze the crap out of the bag. I have a basket in my pot that the bag sits inside. I lift out the grains and use a heavy glass pitcher to press the bag as much as I can. There are many other ways to do this. Pick one that works for you.