# Adding Lactose

**URL:** <https://forum.homebrewersassociation.org/t/adding-lactose/7469>\
**Category:** Ingredients\
**Created:** [August 18, 2011, 5:08pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469 "2011-08-18T17:08:54Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![roguenationpatriot](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/roguenationpatriot/32/7668_2.png) [@roguenationpatriot](https://forum.homebrewersassociation.org/u/roguenationpatriot)\
**Post date:** [August 18, 2011, 5:08pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469/1 "2011-08-18T17:08:54Z")

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I’m looking to use Lactose in my upcoming batch.(Oatmeal Milk Stout)&nbsp; When would be the best time to add it to the wort?

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**Author:** ![tschmidlin](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/tschmidlin/32/3857_2.png) [@tschmidlin](https://forum.homebrewersassociation.org/u/tschmidlin)\
**Post date:** [August 18, 2011, 6:10pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469/2 "2011-08-18T18:10:03Z")

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I would put it in at the end of the boil so it dissolves easier and gets sterilized.&nbsp; But you could add it later if you want, just boil it in some water first for the same reasons.

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**Author:** ![roguenationpatriot](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/roguenationpatriot/32/7668_2.png) [@roguenationpatriot](https://forum.homebrewersassociation.org/u/roguenationpatriot)\
**Post date:** [August 18, 2011, 6:22pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469/3 "2011-08-18T18:22:41Z")

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Is there specific amount you like to use?

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**Author:** ![tschmidlin](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/tschmidlin/32/3857_2.png) [@tschmidlin](https://forum.homebrewersassociation.org/u/tschmidlin)\
**Post date:** [August 18, 2011, 6:26pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469/4 "2011-08-18T18:26:59Z")

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I usually use a pound per 5-gallons, but I know people who use half that.&nbsp; It really depends on the rest of the recipe, mash temp, and the flavor profile you like.

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**Author:** ![dmtaylor](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/dmtaylor/32/9644_2.png) [@dmtaylor](https://forum.homebrewersassociation.org/u/dmtaylor)\
**Post date:** [August 18, 2011, 7:25pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469/5 "2011-08-18T19:25:08Z")

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I like to wait and add my lactose on bottling/kegging day.&nbsp; This way you can adjust if the beer is already on the sweeter/thicker side so that it doesn’t turn out super slurpy.&nbsp; Otherwise I would say 3/4 pound for 5 gallons is a pretty good swag if you’re not sure how much to use.&nbsp; A pound is the absolute maximum for a beer that finished pretty dry.&nbsp; If you add a pound a beer that finished at say 1.018, you’re going to have yourself a thick chewy syrupy beer.

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**Author:** ![roguenationpatriot](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/roguenationpatriot/32/7668_2.png) [@roguenationpatriot](https://forum.homebrewersassociation.org/u/roguenationpatriot)\
**Post date:** [August 19, 2011, 3:17pm UTC](https://forum.homebrewersassociation.org/t/adding-lactose/7469/6 "2011-08-19T15:17:09Z")

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I don’t want it to overpower the oatmeal flavor so I’ll probably try to stay around the 3/4 lb mark or under.