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Old 04-20-2014, 10:56 PM   #11
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Originally Posted by RonPopeil View Post
personally i think you're wrecked. you have 2 # of cara to 11# of base when you probably wanted less than half as much. I think you'll end up with a sweeter version of what you anticitpated.

nothing to worry about. just won't be close to the original. won't be bad.

easiest fix is to kill it with hops. stiffen the bittering addition and bomb it late.
I must have missed that, where another pound of cara was added. I see amber malt (a roasted malt) but not more cara malt.

I didn't explain my rationale for not sparging more and boiling more very well, I'm afraid.

In simplest terms, adding 2 gallons of (say) 1.026 wort and then boiling down won't really increase the gravity. Say you had 5 gallons of 1.050 wort, and it was too low. Adding two gallons of 1.026 wort and then boiling more won't appreciably increase the gravity due to the dilution factor. I'm not very good at explaining this- but if you have all day to boil more, and didn't oversparge then it's ok of course. Unnecessary, and probabably lowered the OG even more, but not harmful to the beer unless excess maillard reactions were formed in an ultra-long boil.
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Old 04-20-2014, 11:20 PM   #12
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I don't see the 2 lb caramel either. One lb is 7-8% which seems fine for a pale ale, I think a little caramel sweetness would help balance the dryness/toast from the amber.

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Old 04-21-2014, 12:35 AM   #13
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In simplest terms, adding 2 gallons of (say) 1.026 wort and then boiling down won't really increase the gravity. Say you had 5 gallons of 1.050 wort, and it was too low. Adding two gallons of 1.026 wort and then boiling more won't appreciably increase the gravity due to the dilution factor. I'm not very good at explaining this- but if you have all day to boil more, and didn't oversparge then it's ok of course. Unnecessary, and probabably lowered the OG even more, but not harmful to the beer unless excess maillard reactions were formed in an ultra-long boil.
I try to not argue too much, especially w\ people with a good rep / track record. This doesn't make sense to me though. These are rough numbers, as I don't remember the exact amounts.

I am shooting for 6 gallons at 1.058.

After first runnings and batch sparge, I ended with 8.2 gallons (desired preboil volume) at 1.036. If I had boiled this down to 6 gallons I would have gotten an OG of 1.049.

OG = 1.036 * (8.2/6)

Instead, I sparged again with 2 gallons which gave me 2 gallons at 1.025. This was added to the 8.2 gallons at 1.036 to get 10.2 gallons at 1.0338. Then, this 10.2 gallons was boiled down to 6. Took a long time. 10.8 gallons at 1.0338 boiled down to 6 gallons ends up at 1.0575.

New pre-boil gravity = (1.036 * 8.2 + 1.025 * 2) / 10.2 = 1.0338
OG = 1.0338 * (10.2/6) = 1.0575

My measured OG matches the theoretical OG pretty closely.

So, by sparging for another 2 gallons and just boiling the excess off, I got 6 gallons of 1.058 instead of 6 gallons at 1.049. It wasn't the efficiency I was worried about, I just wanted to get as close to my intended recipe's OG as possible.

For the fuel cost, I agree completely. I use electricity though, so it isn't nearly as much.
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Old 04-21-2014, 01:19 AM   #14
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Or, you could have kept what you had, and boiled 15 minutes longer and had 4.75 gallons or 4.5 gallons and had the exact same OG that you wanted without burning up more propane. ( I didn't do that math, but 5 OG points is in my "why bother?" camp anyway).

Still, that's fine if that's what works best for you.

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