Question about lactose

[StevieDS]

Does anyone know how I can work out how much lactose to add after fermentation to reach my desired fg?
Basically I want to back-sweeten 8 litres of beer from 1.010 to around 1.017 or so. Any help would be much appreciated.

 

[Awolphotography]

I make it 200g that you require,
Cheers

 

[StevieDS]

Awesome :thumb:
Can I ask how you worked that out? Did you just plug the numbers into brewing software?

 

[Awolphotography]

No worries, just popped it Into beer alchemy on the iphone, 200g of lactose will provide 7 gravity points to 8litres of water / wort

 

[Bernie]

From this site I get about 150 g.


http://web2.airmail.net/sgross/fermcalc/FermCalcJS.html

 

[johnnyboy1965]

Antwhere between 150g and 300g is about right. Its very much down to trial and error. Don't forget Lactose, being Lactose has a very milky taste and is not suited to some beers. I find it works best in darker, low hopped beers, not in Pale Ales, but its up to you.

 

[StevieDS]

Ok so I'll maybe go for about 100-150g then, I don't want to add any flavours.
I had a bit of trouble with mash temperature so my Old Ale finished lower than expected. I just want to add a little sweetness and body.