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Old 09-12-2008, 04:13 AM   #1
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Default Lactose

I am making a milk stout. How much lactose should I use for a 5 gallon batch? How will this affect my FG compared to my OG?

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Old 09-12-2008, 04:22 AM   #2
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Most recipes call for lactose to be added at bottling (or kegging) time, and that is what I would reccomend as well. As far as how much for a 5 gal batch, I'd say 1 lb, but others might disagree.

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Old 09-12-2008, 04:39 AM   #3
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So, I add this along with the priming sugar? Just making sure.

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Old 09-12-2008, 04:43 AM   #4
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my Christmas Stout uses 1# during the boil...any time.
I'm tasting it now...it's good. Could recommend it to anyone! For a milk stout, you'll need more, but I don't think it matters when.

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Old 09-12-2008, 06:07 AM   #5
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So, would 1 lb of lactose make my OG and FG both .009 higher? Is that how it works?

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Old 09-12-2008, 01:11 PM   #6
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Try my http://www.homebrewtalk.com/f68/dark...t-stout-55233/.

I've added the lactose anywhere from with the FWH's to 5 minutes left in the boil with no difference

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Old 09-19-2008, 03:20 PM   #7
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I have the same question as the OP. Instead of making a new thread, I'll continue this one.

How much does lactose affect SG? I know it is unfermenable. I want to know how much higher I should expect my gravity readings to be compared to a beer without lactose.

The OG for my Chocolate Macadamia Nut Stout with 1lb of lactose added at 10 min left in the boil is 1.066. I'm guessing that amount of lactose will raise SG around 8-10 points?

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Old 09-19-2008, 03:25 PM   #8
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Adding lactose may change your OG (before you pitch your yeast), but it will not increase the alcohol (via additional fermentables). I believe you will just have a higher FG. I added 1 lb. of lactose to my milk stout right before bottling, that way I didn't have to worry about any changes to what my expected OG was.

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Old 09-19-2008, 03:39 PM   #9
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Technically it will change OG and FG. It will raise all of your gravity readings by X-points since it is in solution and does not ferment. I was just curious to know by how much.

In the end it doesn't matter since beersmith will make all of the calculations for me.

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Old 09-22-2008, 03:48 PM   #10
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Just thought I'd post some findings for anyone having a similar problem. I'm just a little dumb.

In beersmith, you can add lactose to your recipe. Its listed as "Milk Sugar" under grains/extracts/sugars. I was looking for Lactose under adjuncts.

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