BIAB

someone please explain how BIAB works with only 1 pot how is mash temp held etc

I wrap up my burco in a sleepimg bag and a couple of big cosy coats and it holds temp for an hour even outside in winter.

ill be using a 50 litre pot was thinking of keeping temp in it on the stove

I'd be careful about heating the mash directly. You can end up getting hotspots, or you can burn the bag (unless you make a crude false bottom to keep the bag off the bottom).
I never insulated my 50L biab pot and brewing indoors I'd loose maybe 1°C over a 90min mash.

so which type of pot are you using? just a normal 50l stainless. Also do you sparge

[Jeltz]

By virtue of using a full volume of water the heat loss is much reduced over a 90 minute mash, wrapped in a duvet, sleeping bag or cylinder lagging jacket you'll find helps. When I did BIAB it was electric, sat on a bit of wall insulation (like kingspan) then I used a lagging jacket and it lost only a few degrees little on an over night mash without any further heating.

80L thermobox ... With an element in the bottom to heat the water before mashing, and to boil the wort once the bag and grain is removed

I did a bit of biab with a 50 liter pot. I had it full of grains and water. It held temperature ok with a duvet over it for 90 minutes.
I ended up with about 33 liters of wort into fvs at the end. That did include a small sparge of the grains.

[quote="Jeltz"]By virtue of using a full volume of water the heat loss is much reduced over a 90 minute mash, wrapped in a duvet, sleeping bag or cylinder lagging jacket you'll find helps. When I did BIAB it was electric, sat on a bit of wall insulation (like kingspan) then I used a lagging jacket and it lost only a few degrees little on an over night mash without any further heating.[/quote"]

The method I use for overnight mashing is to stand the BIAB on some kingspan and then wrap it all in a couple of sleeping bags
and a dressing gown( every little helps!). This is all held together with those poundland luggage bungees. Works a treat

Cheers,
Jon.

so full volume mash means no sparge then ?

so the plan would be either a thermobox or a 50 l pot use the full amount of water for mashing remove bag after mashing time then just boil? Or am i missing something. I had a 3 vessel kit BIAB is new to me sorry

[Jeltz]

Ok thanks ill have to get a 50 l pot

Im wondering if i should go back temporarly to Biab
might be a stop gap untill i can get back into the full 3 vessle setup
but does anybody make a bag big enough for a 9 gallon batch?

This sort of stuff?
https://www.minervacrafts.com/shop/fabr ... gJPmfD_BwE
i would have to find somebody to sew it for me too

steve

With good insulation you shouldn't need to reheat mark, just mash in and leave it. I've mashed overnight with BIAB and only lost 5c with fairly inadequate insulation.

good idea
i could cut the center out of a top and use that to clamp it but then i wouldnt have a top to use Doh!
should i go for the 100% cotton or is the mix cotton/poly mix ok to use?

I am going to use net curtain i used it before in the 3 vessel set up. Thanks rob ill be isulating with something maybe kingspan in a wooden box

I've seen someone on here before who had a belt thingy which they put around the outside of the pot holding their net curtain in place. Would be fairly simple but effective I think!

Bungees around the top hold my net curtain in place when I BIAB