Mon Jan 28, 2008 1:27 pm

MixnMatchBrew wrote:So I did my first BIAB Saturday.

Overall the wort was very murky. Probably the fine grind and the huge amount of rye malt.

I have a 3 tier system, but decided to try this for those mobile brew days. Alot less stuff to carry and no tier needed.


Welcome to The Fold. My boils are almost always murky, but it all settles out with the proteins, hop yurk and dead insects. I don't *think* it makes a huge difference. It's nice being able to take the entirety of your brewing kit somewhere such that it all fits inside your boiler...
No Mash Tun. No Chill.

No confirmed fatalities.
SpillsMostOfIt
 
Posts: 47
Joined: Tue May 01, 2007 8:57 pm
Location: Shepherds Flat, Victoria, Australia

Wed Feb 06, 2008 8:39 am

Ok, I'm in the club!

I did my first BRIAN (BRew In A Net) yesterday. It was way murky. I got my temperature right on using Beersmith - 68 degrees (stop laughing a correct me if I'm wrong...). Someone suggested that I do a 90 minute boil. I lost a LOT of water. I boiled water on the side and added until it came down to 1.053.

I aerated with a fish tank bubbler and it foamed all over.

Will that murkiness settle out? How much does that extra stuff throw off by hydrometer readings? I was using a refractometro for most of my readings but a refractometer doesn't show sugar levels it shows solid levels. i.e. If there are other solids in the water they will also raise the brix level. Any thoughts?

This was my first all grain attempt. Any suggestions will be greatly appreciated.

A special thanks to thirstyboy for sending me a bag sample from the other site of the world.

Brian
abaquar
 
Posts: 3
Joined: Thu Nov 08, 2007 3:51 am

Wed Feb 06, 2008 9:42 am

You are most welcome Brian.

Glad you managed to finally get a brew together after all the waiting around for gear and ingredients to get to you. With all that patience, you will make a fine brewer.

68°C is 154°f which is Jamil's magic mash temp... You hit your strike temp and it was a good one; no ones laughing. Did your pot lose much temperature during the mash time?

Murkiness - As Spills said above, yep, BIAB brews are always a bit murky in the kettle. This freaks out people who have a thing about clear wort, but actually makes basically no difference to the final quality of your beer. You might also have simply been a bit unused to the amount of stuff that comes out in the boil, just because you are brewing All Grain now... a LOT more stuff comes out of solution in the boil with an AG beer than an extract beer. And the hops murk things up nicely if you are using pellets.

That said, give it a nice whirlpool, let it settle for 20minutes (or however long it takes to chill if you are using an immersion chiller) and you should be able to rack nice clear wort into your fermentor. If you need to add top up water to your kettle, do that before you whirlpool.

If you got too much murk into the fermentor... indeed it will settle out. You could ignore it for this brew and it will probably be just fine, but if its freaking you out, just rack to a secondary once the krausen falls back into the ber a bit. Leave any yuck behind.

The boil off ..... well, thats a personal relationship between you, your kettle and your burner. You will have to brew a few batches till you work out how much yo boil off in an hour. Remember, if you are makng a small batch (you said your first one was 10L yes??) in a big pot, your boil off will be really high in % per hour terms, and it will be hard to get down very much. Once you start to brew bigger batches, the amount you boil off will stay roughly the same in Litres/hour, but there will be more liquid to start with so you will lose a smaller percentage. Aim for between 10 and 15% per hour when you are brewing full sized... but unless you use a smaller pot, you will struggle to get that in a 10L batch

Refractometer - measures dissolved solids. Any gunk floating around will have minimal effect on your brix reading. BUT it will have an effect on your ability to accurately read your refractometer. The suspendid solids will mke the line fuzzy and hard to read. Stick a tissue or a piece of toilet paper into a small funnel to use as filter paper and filter 20ml or so through that, it will remove the vast bulk of any solds and give you a few nice clear drops for your refractometer. The solids don't effect a hydrometer at all.

Suggestions ..... relax, dont worry, have a homebrew. Then brew again. Its your first AG, its supposed to freak you out a little bit. But the beer will be good and hopefully you had fun.

Look forward to hearing abot your next batch.

Cheers Mate

Thirsty
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Thirsty Boy
 
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Joined: Fri May 19, 2006 12:46 am
Location: Melbourne Australia

Wed Feb 06, 2008 10:34 am

Hi,

Rack to the fermenter? doh, ok, next time. I poured everything straight in.

I will do another 10L today or tomorrow. I want to do several in a row so I don't forget everything.

Thanks for the help. I will let you know how things turn out.

BRiaN
abaquar
 
Posts: 3
Joined: Thu Nov 08, 2007 3:51 am

Wed Feb 06, 2008 12:34 pm

abaquar wrote:Hi,

Rack to the fermenter? doh, ok, next time. I poured everything straight in.

I will do another 10L today or tomorrow. I want to do several in a row so I don't forget everything.

Thanks for the help. I will let you know how things turn out.

BRiaN


Ideally, you want to leave as much of the hops and yurk in the kettle as you can manage as they can lend some flavours to your beer that make it less than ideal. Do not worry though - you will still have good beer.

After I turn off and remove my heaters from the kettle (I use electric immersion heaters), I get my big spoon and try to get a bit of a whirlpool going before putting the lid back on and preparing the rest of the process. This helps the aforementioned yurk fall into a cone in the middle of the kettle, so it is a bit easier to get clearer wort into your fermenter/cube. For a while, I used to pass the whole lot through a sanitised filter bag. This made it easier while I focussed on other things, but I don't tend to do it nowadays.
No Mash Tun. No Chill.

No confirmed fatalities.
SpillsMostOfIt
 
Posts: 47
Joined: Tue May 01, 2007 8:57 pm
Location: Shepherds Flat, Victoria, Australia

Thu Feb 07, 2008 4:54 am

I brewed last night again. I siphoned off this time instead of dumping. It turned out a lot better (still a bit murky but a huge improvement from the night before).

The results where surprisingly consistent with the previous day.

I think this will get better (as thirstyBoy indicated) doing larger (20L batches).

Thanks for the help!

BRiaN
abaquar
 
Posts: 3
Joined: Thu Nov 08, 2007 3:51 am

Tue Mar 04, 2008 12:05 pm

I sewed up my BIAB yesterday and now I need to make time to get to the homebrew store for supplies. Here it is. It is made from 100% nylon Tricot fabric, picked up from WalMart for $1.97 a yard. It's a bigger mesh than the standard home dec/window sheers, so I'm hoping for a faster "sparge". I did double layer the mesh for durability, and I hope that doesn't slow the drain down. If not, I have enough fabric for three more of these, so I'll just sew another one. Every seam is both zig zagged and straight stitched for durability, with the side seams sewn as a rolled/French seam. The top is 1" elastic.

I only have a 5 gallon kettle, so my first all grain batches will be smaller, but hopefully it will get me started. The bag is big enough to fit a larger kettle of a similiar circumference, so if I upgrade I might not even have to re-sew.

http://www.flickr.com/photos/30122891@N00/2309632659/
http://www.flickr.com/photos/30122891@N ... otostream/
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ravingcutie
 
Posts: 16
Joined: Thu Feb 28, 2008 7:51 am
Location: USA

Tue Mar 04, 2008 12:20 pm

Can't wait too see how it works out for you. Also nice user name :)


Travis
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Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza.
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Lufah
 
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