After reading topics like: http://www.havenandhearth.com/forum/viewtopic.php?f=5&t=5992&p=68425&hilit=distill#p68425 and http://www.havenandhearth.com/forum/viewtopic.php?f=5&t=2891 I came to conclusion that these guys didn't quite make the idea as sound as it should be.
Beg my pardon, my syntax might be off at times.
The idea is to make extraction of ethanol from wheat/beets (or new type of beet, sweet beets) possible. With this you'd get a special type of pure alcohol just "spirit". This will open further options for crafting other types of beverages like vodka.
What's the additional stuff? Polish have a liquor type called "nalewka" which is essentially a juice from specific type of fruit of your choice and vodka/spirit. It's generally much sweeter and it doesn't taste nearly as much of alcohol. It's different from rakijas.
How would the drinks work?
Similiar to the drugs actually - for vodka and spirit especially. Let's say drinking them would drain stamina and they offer a hunger reduction bonus for eating any food when you are and when you're not at the table. Scales with q, effectiveness is halved when not drunk from a special shot glass. The buff fills with % adding more visual effects one would consider nauseating if you are above 50% of the buff and rising. Maximised hunger reduction bonus is reached after obtaining 50% of the buff, drinking past it makes the buff just stay there for longer. Your tolerance (how quickly the alcohol works on your body, or how fast % fills) is increased with constitution, which means the more stats you have, the more you have to drink or have to drink veeery high quality to get effects. If you overdose on alcohol your hunger bar should increase, your character becomes slower and you can get HHP damage which will come as "Hangover" which reduces your agi/dex/int.
For the special polish treat "nalewka" it would reduce satieties for a _specific_ food type, depending on what it is made from, increases other specific food satiety. Careful with drinking those as they will have same negative effects as the vodka/spirit.
Is this too OP or ballanced or underpowered? I was trying to compare to what we already have in game and made this.
How would distillation itself work?
I'm honestly open to ideas of others, as I'm not an expert in the topic.

I figure one would use a contraption like this? Unlocked from learning a skill which comes after wine making as "distillation", 15k LP. Quality of the work station would matter in the process of making an alcohol, perhaps requiring some special clay/glass crafted items to be made, like the the bottles. Quality of those sub materials would scale from farming/cooking/masonry.
I think this would fit with the theme of the game, but I might be wrong. Steel and brick walls all around us but no way to celebrate it with something stronger that might make your head hurt a little?
Bonus: Credo - Drunken Master.
Example bonuses:
- Unarmed Combat +15
- Cooking +20
- Increase the base quality of the alcohol bewerages made (similiar to forager buff)
- Increased speed of destillation started by a character
- Increased speed of studying while under the effect of stronger alcohol (+5%)
Example quests:
- Create x alcohol, (beer, wine, vodka, others)
- Drink x alcohol (beer, wine, vodka, others)
- Fight animal while under effect of alcohol (normal animals, badger, boar, wolverine)
What do you guys think? "Oh boy, yet ANOTHER thread about that".