Milk stout attenuation confusion

johnnyjumpup · May 14, 2013

Howdy,

So I brewed 2.75 gallons of milk stout with 13 oz of lactose, OG = 1.052. I used White Labs Burton ale yeast (expected apparent attenuation 69-75%). What kind of attenuation can I realistically expect with 13 oz of lactose in there? I'm at 57.6% apparent attenuation right now (1.022).

Cheers

BigFloyd · May 15, 2013

With that much lactose in a small batch, 1.022 is probably the best you're ever going to see. Without the lactose, you'd be in the 1.015 neighborhood. Try running it through a batch calculator both with and without the lactose and you'll see what effect it has on the OG. All of that milk sugar will still be there to increase your FG.

I have a milk chocolate stout conditioning now that finished up at 1.021 with had 16oz lactose in a 5.5 gallon batch.

johnnyjumpup · May 15, 2013

Thanks a ton!

JLem · May 15, 2013

1.022 is right in the range for where I would expect a milk stout to finish.

Milk stout attenuation confusion

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Milk stout attenuation confusion

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