: Thanks for digging up the links
. I've just added a thirteenth point to Some Common Reasons for a Low Efficiency Reading
. This refers to a crush being too fine or too coarse.
: Hey there Nick! (Thanks for your email btw
) This is a great question and, I hope you don't mind, but I'm going to answer it in some detail. Here you go...
Do you have a problem?
One great thing about The BIABacus is it is the only software that will tell you when something is not right. The BIABacus is telling you that you have a major problem
. So, the subject of this thread should not be, "Help adjusting BIABacus to assist low EAW - Efficiency of Ambient Wort." Instead it should be something like, "Why are my kettle efficiencies (EIB and EAW) so low?"
You can use Section X of the BIABacus to change defaults as much as you want but that just covers up your problem, it does not fix it.
What to do when you do have a 'kettle efficiency' problem
Before your next brew...
Study Some Common Reasons for a Low Efficiency Reading
. Print that list out and cross off anything that you have already double-checked. Check the others.
On your next brew/s...
It's really important when you have a kettle efficiency problem like this to measure, measure, measure. You need to take "volume and gravity sets." On the BIABaci you have posted, we don't have enough sets. Taking measurements sounds easy but it's not (e.g. measuring Volume into Boil or cooling hot gravity samples.) You need to plan the taking of them.
You mentioned above, "Mash for 90 mins (although I don't really believe in the necessity of that, I'm currently studying brewing and enzymes work a lot faster than that)."
This is a good example of how theory can lead us away from reality. Even in "Malting and Brewing Science," ($350 for both volumes), you'll find that the numbers are generally just based on very few experiments. If you look at this thread
, you'll see many "real-life" numbers that show that an increase in mash time has a significant effect on extraction.
... so, to sum up, lots of things for you to check before your next brew and plan to take three "volume and gravity sets," on your next brew.
If you have found the above
or anything else of value on BIABrewer.info, consider supporting us by getting some BIPs!