I'd like to start off by saying that i already find the Brewing system interesting which would normally make this post pointless but i'll expand on what i mean and hope to hear what you think about it.
The idea of breeding crops to ferment alchoholic drinks is a really good one and I enjoy the idea quite a bit but its lacking in diversity despite the 200 some odd varieties of the beer/ale/dragonsblood. For me, I find rum and black stuff to be the most fun ones to have because they each have a unique personality with their effects. It may well be that the intention of this feature is to offer players a minor effect from the drink itself and more of a roleplayish style of feature to "have a beer with friends" rather than a practical purpose. In both cases it is lacking in diversity from my point of view since even within the current crops you can breed there are many hidden gems that can be fermented into well known drinks like vodka for example, from potatoes.
Practical value to this feature may come from things like specialty brews of drinks which produce unique results. You'd need to discover these combinations of ratio and ingredient types to find "Chef's delight beer" which may give some buff that allows "blank' to happen better or worse in some cases depending on if its a posative unique type or not. The general point I'm trying to make is this feature can be expanded into a much more robust and practical means to enjoy your crops while tripping over cropsticks or walking into trees.
A minor note, this is ic2 so to not have brewing machines or some kind of storage ability for our brews and/or cooled storage powered by our energy grid seems like a fun oppurtunity to play around with i think.
Also, for those who typically just post "I like the idea" in threads like this please change your reply to "i'll drink to that.' for a bit of fun.