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19
votes
3answers
2k views

How Does a Hydrometer Work?

I know how to use my hydrometer, and I know what numbers to look at and write down on my brewing sheets, but I'm not sure what those numbers actually represent, or even what units I should use to ...
3
votes
2answers
133 views

Does anyone know what is the science behind maturing?

Once upon a time I did a little science at Uni. I'd now be really curious to understand a bit more behind the amazing difference between a freshly brewed beer and one that's matured on yeast for some ...
10
votes
4answers
129 views

What's A Good Book on the History of Brewing?

I've been brewing for a while now, and would really like a comprehensive book on the history of brewing. Something that covers the development of different styles of beer, and delves into the science ...
2
votes
2answers
494 views

Brewing with very bad old-smelling potatoes?

Very bad potatoes seems to have some sort of acid and other poisonous items formed. A suggestion in Cooking.SO, here, proposes distilling vodka with old potatoes, having a link that overlooks the ...
3
votes
2answers
445 views

Final Gravity on the Refractormeter vs. the Hydrometer

I've been brewing the same recipe now for several batches. It's my house beer. A Kolsch-style beer. While I have followed the same recipe for each attempt, I'm sure there has been some variances in ...