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@CascadesBrewer - The late sugar addition was not adjusted to my 75% brewhouse efficiency like the other grains were. @Yooper pointed out this is because the table sugar isn't mashed, just added directly to the boil. I tend to think of gravity as a percentage... if 30% of your wort is sugar and...

Didn’t even think about that. Perfect!

I think I have figured something out here that potentially is an issue. I'm going to try again and link the whole recipe. I have it selected to be a public recipe and I'm using the share as URL, so I hope non-BF folks can see this. If not, I'm piecing together some screen shots in here...

I hope this is the one you’re looking for. Measured (twice actually) 1.033 pre-boil at 4.9 gal at 148F. Dead on estimated pre-boil gravity and volume.

I ended up using turbinado, which to my knowledge is the same ppg, just different srm. I will say I added it closer to 0 minutes instead of 10. If I’m doing my math correct that would be 15.3 points (46/3) where as at 10 minutes it would be 14.3 points (46/3.2)... a difference of 1 point...

Exactly, only brewhouse efficiency. So my volumes appear correct here.

Here is my volume breakdown for the batch in question. It seems from looking at this that we are on the same page here. 4.83 boiling off 1.88 comes down 3.0. Late sugar increase, hops absorption decrease then 0.25 dead space and 0.25 chiller is 2.5 into the fermenter. Does that look correct?

Well I’m certainly closer but can’t say I have figured out the issue yet. It definitely is a late sugar addition issue, not boil-off rate. I have plugged the recipe into Beersmith3 as well as Brewers Friend and both come up with the same numbers. They don’t seem to coincide with manual math, but...

I have never done covered boils... I always thought one wasn’t supposed to? [emoji51]

I have a Megapot 1.2 and it seems like 5 qts/hr is pretty standard for the 1.2 kettle? For a 90 minute boil 1.8 gal is about right and I don’t think I’m boiling it all that “hard”.

My water requirements go something like: Pre-boil vol: 4.83 Boil off losses: (1.88) Vol increase from late additions: 0.07 Hops absorption losses: (0.03) Kettle dead space: (0.25) Chiller losses: (0.25) Amt going into fermenter: 2.5 So these numbers should be right, and I’ve never had any...

This is exactly how my actual numbers went! I used the BF default setting for sugar and just figured it was correct. I imagine plain sugar is a widely enough used ingredient someone would have noticed an error if BF had its points/lb listed wrong. Coincidentally, this happened to me on my last...

Sorry, I guess I didn’t know a BF account was needed to view that shared recipe and I’m not sure how to share it any other way. I’ll see if I can change that. My late sugar addition was done at 10 minutes left in the boil and was 1 lb. Pre-boil gravity was 1.033 and 18 points from the sugar...

My last two high gravity beers have been way short on OG. Today’s is especially aggravating. My pre-boil volume and gravity were dead on to the recipe (1.033 or 1.051 with the late sugar accounted for and 4.8 gal). Boiled for 90 minutes shooting for 1.081 and 3 gal post boil. Ended up dead on...

Still trying to make some sense of this... and I think your linked post definitely hit one part correct. Kettle losses and misc losses and not factored here, but I don't think they need to be. Wort left behind is an efficiency function, not an OG factor. Anyway, I looked at 3 recipes of mine...

Brewers Friend has Kettle and Fermenter modes too. I use this the same way as you. I’ll have to play around with some of my other recipes to see if the difference between the modes in question creates the same difference. The current recipe has a 90 minute boil and high OG, which I suppose could...

I use the BIAB method and have my equipment profile set. There is a new(?) option I just noticed that I'm confused with. Under "Advanced Recipe Options and Stats", "Equipment Profile", it says, "Use the following option from your equipment profile to change the original gravity formula using...

Sunday night’s brew.... a pale ale with Bohemian floor malted Pilsner, C10 and ahtanum hops. #K.I.S.S.