[kgs]

I saw a comment to a post about no-sparge on the Basic Brewing FB page where the commenter said he mashed at his usual grain/water ratio but added the remaining water as a mash-out, then drained. I'm not a mash-out believer, but it's an interesting twist.

Though all this talk about efficiency is reminding me that there is a movement afoot to name 11/11/11 Nigel Tufnel Day... "Mine goes to ELEVEN!"

[malzig]

I saw a comment to a post about no-sparge on the Basic Brewing FB page where the commenter said he mashed at his usual grain/water ratio but added the remaining water as a mash-out, then drained. I'm not a mash-out believer, but it's an interesting twist.

I have added all the water in the beginning, on occasion, but most of the time I add a portion of the water late in the mash as a step up to an alpha amylase in the 158-162°F range.  That may be helpful for getting your conversion up into the 90%+ range.  A "mashout" may help do the same thing before the enzymes are denatured.

[a10t2]

The only variable is the pre-boil volume. At 5.5 gal, it'll be ~66% efficiency. At 7.5 gal, it's ~76%. Since you aren't compounding it with a second batch, the range is really pretty small.

Just still not following, why would a 5.5 gallon batch of 1.075 have a 66% efficiency and a 7.5 gallon batch a 76% efficiency. Are you assuming using the same amount of grist or something and just adding more and more water?

Those are both assuming 5 gal at 1.075 post-boil. The grist quantity changes when the efficiency changes - more boiloff means greater efficiency.

16.0 lb grist, 7.4 gal strike -> 5.5 gal of 1.068 wort (66% eff.)
13.5 lb grist, 9.1 gal strike -> 7.5 gal of 1.049 wort (76% eff.)

Somebody help me wrap my brain around all the stats for a 1.075 - 5 gallon finished batch size on a NO-SPARGE (meaning only drain the tun) which would have a 75% efficiency.

Most likely, you wouldn't want to get 75% efficiency on a 1.075 beer since it would require boiling off 1/3 of the pre-boil volume. With a more typical pre-boil volume (6.5 gal), the efficiency would be ~71%.

[noonancm]

I realize that it has been a while since this thread developed but: What is the difference between no-sparge method as described in BYO and "Brew-in a-bag method made popular in Australia?

[denny]

It all depends on if you sparge the bag in BIAB.  Some do and some don't. 

[malzig]

It all depends on if you sparge the bag in BIAB.  Some do and some don't. 

The other side of that being that you don't need to use a bag to do No Sparge.

[weithman5]

some people who use a bag just put the bag in all the water needed heat it up rest, then boil.  i tend to use typical mash ratios then pull the bag and rinse.  i do small batches so i don't need a big heavy bag.  fundamentally it is similar to mashing i a tun

[kgs]

some people who use a bag just put the bag in all the water needed heat it up rest, then boil.  i tend to use typical mash ratios then pull the bag and rinse.  i do small batches so i don't need a big heavy bag.  fundamentally it is similar to mashing i a tun

I do small batches and that's still too much of a bag of wet grain to deal with.