Vey nice build!
Thanks, I had a lot of fun building it.
Vey nice build!
I have always wondered that. Chrome is okay in brewing applications right? I am assuming you wouldnt be sharing your build if you have had off flavors though?
Unfortunately, it's hard to find one made from stainless.. and if you find one the right size.. they seem quite expensive.
Heres a BIAB question that I cant really seem to find an answer for.
Can/do you use Mash Ph Stabilizer 5.2 in your brews? Pros/ Cons??
I tried it in my last beer and its only a week into primary, so I dont really know if it has affected it at all. I tried it using local tap water (filtered), campden, and the 5.2 stabilizer. Is this okay to use with BIAB??
Just checking in to say I'm attempting my first BIAB next weekend. It will be a Founders breakfast stout clone. I'm using a 10 gallon pot and BrewSmith says I should use 7.5 gallons of water for the mash. The recipe uses ~ 17 lbs of malt and grain. Maybe I shouldn't have attempted such a big beer for my first AG brew, but I'm worried that it won't all fit. Is there any easy way to know for sure before I start? My plan is to have some backup water heating so if I can't fit all the water in, I can do a sort-of sparge with the extra water to rinse the grains to end up with the full volume needed to boil. I know I've seen a few mentions of sparging with BIAB. What does everyone think about that?
Thanks for that. I haven't seen that written out like that before. How do I figure trub loss? Isn't roughly 0.25 gal?absorption+batch size+boil off+trub loss= water needed.
grain weight in lbs * .060= absorption
so, if this is a 5 gallon batch.
17 * .060 = 1.02
1.02+5+ boil off+trub loss = water needed.. you'll have to supply those numbers as what is the boil off and trub loss for my setup will probably be different from yours. 7.5 gallons would be a minimum amount. keep some water heated on hand in another kettle and if needed do a dunk sparge and combine the 2 amounts.
Thanks for the info, so looks like I will have to do some sort of dunk sparge then.I use a 10 gal pot and have to scale down my recipe for big beers because the pot is too small. I can do almost 6 gal. with a grain bill of about 12 pounds with about 2 inches to spare. Your sparging method may work though. Haven't done it myself, just full volumes.
Thanks for that. I haven't seen that written out like that before. How do I figure trub loss? Isn't roughly 0.25 gal?
I'm thinking my boil off is about 1-1.5 gal/hour though I haven't tested it directly. But I've been doing mostly full boil extracts for the last few batches so I think that's close.
So maybe 7.75 gal.
Thanks. Guess I need to get a bigger pot now!
Tannin extraction is dependent upon temperature and PH. I use a $25 Corona mill and get some pretty shredded husks and a good bit of flour. I average around 85% efficiency. Straight up flour would definitely be too fine...The bag has to be able to catch the grain.
You don't want to let the grains get above 170...you shouldn't be mashing anywhere near there anyway. Where you need to watch is mash-out (if you do one.) For my mash-out, I usually heat to 168.
You don't want to let the grains get above 170...you shouldn't be mashing anywhere near there anyway. Where you need to watch is mash-out (if you do one.) For my mash-out, I usually heat to 168.
wrong info here... plain old regurgitated wrong info. Tannins are NOT extracted by going above 170F. If they were, a decoction mash would result in a tannin filled beer that would taste like crap instead of a malty beer that has complex flavors. After all you BOIL the grain in a decoction. Pressure doesn't release them either, so squeezing the bag is perfectly fine. PH is where you get tannin extraction from. Which is what happens to traditional 3V brewers when they over sparge. The PH goes out of control and tannins get extracted.
as far as what tannins taste like. its an astringent mouth feel.
I think I saw something about doing a mash out at 170F with BIAB due to increased efficiency (I think). Are you saying I shouldn't raise the temp for a mash out for 10 mins?
Just did a high gravity beer with this method. 18 lbs of grains and hit 75% efficiency (1.080 OG at 6 gallons). It was still a bit of a rough day lifting and squeezing that bag even with a deck overhead to run a rope.
The only problem was that my boil off rate wasn't as high as much as i suspected so I ended up with 6 gallons instead of 5.5. The end result is my OG was a bit low but my efficiency was at 75%. So yes it is possible to do a higher gravity brew just be prepared fora little extra work.
My next high gravity beer will be a Barley Wine attempt....may have to invite some friends over to help with that and refine my hoist system as well.
Can you explain how you connected the rope to the bag? Did you use a voile bag?Just did a high gravity beer with this method. 18 lbs of grains and hit 75% efficiency (1.080 OG at 6 gallons). It was still a bit of a rough day lifting and squeezing that bag even with a deck overhead to run a rope.
The only problem was that my boil off rate wasn't as high as much as i suspected so I ended up with 6 gallons instead of 5.5. The end result is my OG was a bit low but my efficiency was at 75%. So yes it is possible to do a higher gravity brew just be prepared fora little extra work.
My next high gravity beer will be a Barley Wine attempt....may have to invite some friends over to help with that and refine my hoist system as well.
Thanks much!some say that a mashout increases efficiency, others say it doesn't make a difference. Raise teh temp for a mashout and don't worry about it. the temp increase is a VERY VERY small factor in extracting tannins. PH is the main cause of tannin extraction and not a worry in BIAB
Looks like I need to learn how to tie some knots I saw someone use a noose too. I was worried that the bag would slip out of whatever knot I made, but I guess that isn't a problem as there is enough friction in the material maybe??
Thanks for the video and I had seen your strength test. Much appreciated.It is not nearly as difficult as you might imagine, all you need to is wrap a cord tight several times around the gathered bag and tie tightly.
here is 120 lbs held in a bag just gathered and tied with a strap wrapped around several times and tied.
https://www.homebrewtalk.com/f11/biab-polyester-voile-strength-test-384445/
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