As homebrewer I love the idea, but unfortunately other than the Schottky Pumpkin Ale, it's not very "open source" as they do not list percentages or quantities on any of the grains they use. Even the Schottky doesn't mention the batch size -- though you can reverse engineer it given the gravity but you have to assume the efficiency.<p>Hopefully they go ahead and release more details on the other brews and make it fully open source.
Co-Founder George Kellerman here. I lurk on hackernews a fair amount (technically through hackurls.com) and just saw this post so that was pretty cool. At the moment the majority of our "open sourceness" is provided in the deep dive blog posts that we do <a href="http://twbrewing.com/blog" rel="nofollow">http://twbrewing.com/blog</a>. We have a lot of work ahead of us to be truly open but we do have a couple special projects in the works to help that happen.
I always find with the clone beers I've made they're not really that similar to the actual beer.<p>I think there's possibly a number of reasons for this. The yeast strain used is highly important along with the fermentation temperature. The mash temperature used is also very important (and whether it's a step mash).<p>I'd be interested to know other people's experiences with trying to clone beers.<p>( As a little aside I'm working on a little opensource device for homebrewers to measure specific gravity during fermentation <a href="http://hackaday.io/project/1231-Zymeter" rel="nofollow">http://hackaday.io/project/1231-Zymeter</a> )
This is great, particularly based on some of the feedback in the comments. The diagrams seem differ from the recipes in a few places, I assume these are hardcoded at this stage?<p>Once you get things in order for batch size conversions and clean up consistency, it would be neat to support efforts within the resulting community. I'm sure these are on your radar, but things like batch challenges (where others try their hands at brewing your recipe and blind taste test) and community provided/selected batch modifications for limited runs could be a lot of fun.<p>I'm looking forward to more posts as you move forward.
Check out this brewery in San Diego. They list all their homebrew recipes as well.
<a href="http://moderntimesbeer.com/blog/open-source-brewing" rel="nofollow">http://moderntimesbeer.com/blog/open-source-brewing</a>