King Ruddager Posted January 27, 2019 Share Posted January 27, 2019 Just checking to see at what rate people adjust efficiency for higher gravity brews. Numbers for my weekend brew were a bit low ... Link to comment Share on other sites More sharing options...
joolbag Posted January 27, 2019 Share Posted January 27, 2019 What would you call high KR? I know my numbers were low when I did a big IPA last year. I adjusted to 70% but got a touch lower. Will check numbers after I get these kids to bed Link to comment Share on other sites More sharing options...
Greenyinthewestofsydney Posted January 27, 2019 Share Posted January 27, 2019 For my Robobrew. A normal 1045 ish brew I get about 75%. Then I find I lose about 5% for every 10 points there or there abouts. So 1055 70%, 1065 65%. After that I reduce my batch size as my system can't take higher than 6kg of grain without going into the 50's in efficiency. Link to comment Share on other sites More sharing options...
ben 10 Posted January 27, 2019 Share Posted January 27, 2019 mine is just shit when I go too high, lucky grain costs are low. Link to comment Share on other sites More sharing options...
Otto Von Blotto Posted January 27, 2019 Share Posted January 27, 2019 Depends how high the gravity is, or more to the point the weight of grain usef. I normally run about 75% for high 1.040s-low 1.050s brews with about 5kg grain for a 25 litre batch, but obviously it drops as the weight goes higher. Rather than base it off the intended OG, I use the weight of grain against the batch volume. I made a stout a couple of years ago with just over 7kg grain, in that case I reduced the efficiency to 63% but ended up getting 69%. The more recent one I did I kept that in mind and used 65 or 66% I think, for almost 9kg grain, and ended up getting 68% in reality. Both of those batches were 21 litres. I didn't really use any calculation to come to those efficiency figures I worked with for constructing the recipes, just educated guesses. Link to comment Share on other sites More sharing options...
joolbag Posted January 27, 2019 Share Posted January 27, 2019 Hey @Greeny1525229549 I looked up my brew log and my numbers reflect yours. OG = 1.068 and I got 65.3% efficiency. I usually get 75% for 1.050ish. BUT that IPA I used a different pilsner malt which was smaller in size, and a kilo and a bit of Rye, which is very different in shape. Hadn't brewed with rye before Link to comment Share on other sites More sharing options...
Beer Baron Posted January 27, 2019 Share Posted January 27, 2019 My efficiency is between 75%-80% but I haven’t made any big beers. I am brewing a 7% stout tomorrow so I’ll see how I go Link to comment Share on other sites More sharing options...
Greenyinthewestofsydney Posted January 27, 2019 Share Posted January 27, 2019 42 minutes ago, joolbag said: Hey @Greeny1525229549 I looked up my brew log and my numbers reflect yours. OG = 1.068 and I got 65.3% efficiency. I usually get 75% for 1.050ish. BUT that IPA I used a different pilsner malt which was smaller in size, and a kilo and a bit of Rye, which is very different in shape. Hadn't brewed with rye before Do you have a robobrew @joolbag? Not a bad piece of equipment but after 80 or so batches through it it does have its limitations. Saying that i have made some awesome brews with it. I am close to biting the bullet and going a 3V system and the robobrew will be there for the sparge. With the 3V i can do anything i want plus get much better efficiency for those bigger brews. Link to comment Share on other sites More sharing options...
PaddyBrew2 Posted January 28, 2019 Share Posted January 28, 2019 n00b question but how does one measure efficiency. Is it based off your recipes OG and you calculate using the actual gravity you get ? Link to comment Share on other sites More sharing options...
Otto Von Blotto Posted January 28, 2019 Share Posted January 28, 2019 Total efficiency is based off OG, batch volume and grain weight. Mash efficiency is based off pre boil volume, SG and grain weight. Most of us just use software to work it out by inputting those details. Link to comment Share on other sites More sharing options...
PaddyBrew2 Posted January 28, 2019 Share Posted January 28, 2019 Does beersmith calculate it Link to comment Share on other sites More sharing options...
King Ruddager Posted January 28, 2019 Author Share Posted January 28, 2019 I used 9.5kg and must’ve got ~60% instead of my usual 70% from 5.5kg. Significantly more grain than usual so no real surprise, it’ll just mean my BU:GU is out a bit as the OG was 1.065 instead of the desired 1.075. No big deal though. Link to comment Share on other sites More sharing options...
joolbag Posted January 28, 2019 Share Posted January 28, 2019 @Greeny1525229549 I have made my own little ghetto system from a second hand 33Lpot, a three ring gas burner I had for outside cooking, a BIAB, etc. Its a 1V, but definitely not a Robobrew. I guess I didn't expect to love brewing as much as I did, so started on the cheap. It still works and is producing beers that have podiumed so I see no reason to change! In my little house and shed I have no room for a 3V, was just chatting to a friend about it the other day Link to comment Share on other sites More sharing options...
Otto Von Blotto Posted January 28, 2019 Share Posted January 28, 2019 13 hours ago, PaddyBrew2 said: Does beersmith calculate it Yes. Link to comment Share on other sites More sharing options...
Worthog Posted February 27, 2019 Share Posted February 27, 2019 Can someone advise me if the use of different grains effects mash efficiency. E.g.. 3.4kg Maris + 1kg Vienna Compared to 3.4kg Export Pilsner + 1kg Wheat Same total weights. If both mashed in same amount of water (32L) at same 65c/60m, will the OG therefore efficiency be the same? Link to comment Share on other sites More sharing options...
Otto Von Blotto Posted February 27, 2019 Share Posted February 27, 2019 Not necessarily. It depends on the diastatic power of each grain as well as the expected yield. They do vary. You'd probably get slightly more gravity points from the pilsner malt than Maris otter, for example. Link to comment Share on other sites More sharing options...
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