Assumed efficiency BIAB

[ajmuzza]

Gearing up for my first BIAB and have been playing with a recipe in Brewmate. The recipe I'm looking to scale down is the SNPA clone which has an efficiency of 77%. I suspect this is probably a litte ambitous for my first BIAB (single step no sparge).

What's a decent assumption to make for effciency for your first BIAB with a 40L Crown Urn?

Also, I was looking to have a crack at a 10L batch first time round. Does volume affect efficiency?

Cheers

 

[QldKev]

Vol doesn't effect efficiency, expected OG does effect it. The higher the OG the lower the EFF.

Being no sparge I would dial up 70%. Just make sure you measure what you actually get ready for next time.

 

[wbosher]

I generally aim for around 70% and the majority of my brews are around there...give or take a few. I've been getting this since day one, so no reason you can't.

Volume won't affect efficiency as long as you scale the recipe correctly.

EDIT: Beaten to it

 

[Aydos]

It also depends on the SG of the wort your making. My mash efficiency (SG of the wort after mashout/lifting the bag) is generally around 77-80%. I tend to make beers in the vicinity of 5.5-6%

If your aiming for a beer around 4-5% then you might expect to set your mash efficiency for around 80% for the first go and see how you go from there. If you BIAB in a crown urn then I would be aiming for around 65-68% into the fermenter. This will equate to around 77-80% mash efficiency if you have the same losses as me.

Hope this helps

 

[jacknohe]

For the first year of BIAB I got a consistent 70% efficiency. However, i'm pretty much getting 75% now due to a process change, i.e. dunk sparge + hand squeeze.

Go for 70% for now and see how it goes...

 

[roverfj1200]

Doing pale beers at about 4.5% abv and most of the time end with 22L in the cube and top up in the fermenter to 23L. Measure things at full volume and most times hit 70%+/- 2%. Don't wary about all the figures enjoy making the brew. The rest will come as you learn.


Cheers.