All went fairly well. Stress free..
Preboil SG was 1038 (adjusted) from an expected 1042
Post boil SG was 1043 from an expected 1052.
I think my low SG problems come from my volumes. (not that I measured them) Ended up with about 26L of wort when I wanted 21L. This resulted in an unexpected overflow from the cube (My only problem of the day)
How much volume do you guys loose to the grain? Is it a 1:1? Beersmith calculates it as that but somehow I don't think it was. I'll be measuring the next lot to get a better feel for my system with boil off etc.
Besides all that it was really easy to use. Quite easy to clean as well. Was also going to use it as a hop bag but forgot & threw the hops straight in the kettle. Not that it mattered as I put some Brewbrite in at the end of the boil and it settled the hops & break to the bottom so when I drained it, it was nice & clear.
Need to get an over the side immersion though as the 2200W element takes a while to get a boil on. It'd prob only take 1/2 hr off the time though.
Cheers, Mat.
Post #27 made 14 years ago
Great to hear! You'll have to let us know how it does on the hops as well next time!
I lose .125 gallons of beer per pound of grain to absorption.
I lose .125 gallons of beer per pound of grain to absorption.
Post #28 made 14 years ago
beer smith doesn't take into account that we squeeze our grains. that reduces the absorption. if you had boiled down to 21L you would have been a lot closer to your expected SG. It all comes from learning your equipment and how much you lose to absorption and boil off.
Post #29 made 14 years ago
I didn't squeeze. Just drained. Yeah if I adjust the final volume in beersmith it brings the SG a lot closer to the mark.
At the end of the day I made beer!! the proper way. May be a bit lower in ABV but I don't mind that.
Cheer, Mat.
At the end of the day I made beer!! the proper way. May be a bit lower in ABV but I don't mind that.
Cheer, Mat.
Post #30 made 14 years ago
Sounds as though all went smoothly apart from the volume side of things. On the next run, do a bit more measuring and you'll get things sorted pretty quickly. The beer will still taste fine anyway so no worries there.
Thanks for the update Mat
.
PP
In metric, with BIAB, some figures we have gathered from a number of brewers give an average of 0.62 L of liquor being retained by 1 kg of grain rather than the usual 1:1 ratio found in traditional brewing. Some of the reasons for this can be read here.matr wrote:How much volume do you guys loose to the grain?
Thanks for the update Mat
.PP
Last edited by PistolPatch on 28 Dec 2010, 20:57, edited 5 times in total.
If you have found the above or anything else of value on BIABrewer.info, consider supporting us by getting some BIPs!
-
- SVA Brewer With Over 100 Brews From Australia
-
Post #31 made 14 years ago
Awesome work Mat!! Sounds successful. I will be considering this in the future. Just got a pump and hoprocket to play with first 
Arrogant Bastard Ale: "...Perhaps you think multi-million dollar ad campaigns make a beer taste better. Perhaps you're mouthing your words as you read this."
Post #32 made 14 years ago
Hi guys, Just another update from my 2nd brew using this.
Brewed a Kolsch
90% Pils
5% Munich
5% Wheat
Worked out my volumes and did a lot better. Still room for improvement though (Actually undershot it a bit).
Efficiency details are;
Efficiency into boiler: 80%
Brewhouse efficiency: 75%
Efficiency into fermenter: 70%
So pretty good I thought?? By the way, what is the efficiency most people quote when they talk efficiency?
I guess I should also mention the grains were crushed by the HBS so not specifically for BIAB in mind
& I also have not looked into mash PH yet.
Next up a Dunkel.
Cheers, Mat.
Brewed a Kolsch
90% Pils
5% Munich
5% Wheat
Worked out my volumes and did a lot better. Still room for improvement though (Actually undershot it a bit).
Efficiency details are;
Efficiency into boiler: 80%
Brewhouse efficiency: 75%
Efficiency into fermenter: 70%
So pretty good I thought?? By the way, what is the efficiency most people quote when they talk efficiency?
I guess I should also mention the grains were crushed by the HBS so not specifically for BIAB in mind
& I also have not looked into mash PH yet.
Next up a Dunkel.
Cheers, Mat.
Post #33 made 14 years ago
Efficiency into boiler is what I use.
Keep up the good brewing
Keep up the good brewing
"It's beer Jim, but not as we know it."
Post #34 made 14 years ago
That's great Mat and thanks for the update.matr wrote: Efficiency into boiler: 80%
Brewhouse efficiency: 75%
Efficiency into fermenter: 70%
So pretty good I thought?? By the way, what is the efficiency most people quote when they talk efficiency?
When you ask what figure most brewers refer to, there is way too much ambiguity in this area. For example, I can see by the way you have posted, that by Brewhouse Efficiency, you mean, "Post-boil efficiency." But, many other brewers will use the same term to describe, "pre-boil efficiency (efficiency into kettle,) or their efficiency into the fermenter or even, on occasion, post-fermenter efficiency.
The best way to avoid any confusion when you report efficiency is to state exactly what efficiency figure you are referring to. Most brewers don't and assume that everyone else thinks the same as they do, which they don't
So, no answer for you there as there isn't one. Crazy I know but that's the way it is and probably will remain
.On the crush side of things, if your HBS crushes grain as they would for a traditional brew, then this should be perfect for BIAB. A good crush allows the guts of the grain to be exposed to the liquor. That's all we need. Turning things to flour will create a disaster in traditional brewing. In BIAB, it will also cause problems such as an impossibly slow draining bag or a heap of "silt" that will need to be dealt with later. It's all a matter of balance.
Cheers Mat,
PP
Last edited by PistolPatch on 04 Jan 2011, 20:43, edited 5 times in total.
If you have found the above or anything else of value on BIABrewer.info, consider supporting us by getting some BIPs!
-
- SVA Brewer With Over 100 Brews From Australia
-
