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Old 01-02-2014, 12:02 PM   #1
Johnnyhitch1
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Default Final gravity and chocolate oils.

Recently brewed a breakfast stout with rolled oats lactose coffee and chocolate chips. In primary for 2 weeks racked to purged keg and pressured to ~10psi for 4 weeks.

On transfer i took gravity readings and it read 1.038 (1.073 SG), sample tasted great and as i confirmed on week 4 with a carbed sample this was a "finished" beer ive brewed my far amount of batches and everyone who has sampled it has loved it. Im not a sweet person at all but i do enjoy this profile with some sweetness to it, which i get...nowhere near 1.035 (taking out the lactose addition) though??? I get around ~.022

OK, if i still have you, my question is are the oils, dextrins and lactose in combination with my high mash temp (155) throwing off my hydrometer? Ive double checked with 2 hydros and 2 thermos both at 70*

Beer is going to get drank but i just find this weird??


1lb munich
10oz Amber
8oz Roasted B
8oz Chocolate
2 row/pearl/MO Blend base
2 oz Chocolate chips
8oz Lactose
1 oz coffee

Mash @155 for 60



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Old 01-02-2014, 12:49 PM   #2
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Yea you'll get oils from the oats and dextrins from the high mash temp. That along with the lactose is going to give you a high FG.

Here's the thing though, FG is NOT a measure of sweetness, only a measure of dissolved solids. So your hydrometer isn't being thrown off, it's giving you the density of the sample. It just happens there is more than just simple sugar left in there



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Old 01-04-2014, 04:48 PM   #3
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Thats what i thought. Thx aeration.

Good to know its Dissolved solids thought it was just sugar that hydrometors measure.

Anyway to know the true final "sweetness" gravity??

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Old 01-05-2014, 02:26 AM   #4
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That's kind of tricky. So far as I know there isn't a measure for sweetness besides your own taste buds. I've had beers come out 10 points higher and taste far drier than others.

In all honesty I think that some people put just a little too much importance on FG. It's a very useful metric when your trying to assess the status of your fermentation but it has limitations that you need to pay attention to.

In the end it's all about tasty beers, and it sounds like that beer fits the bill!

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