So just fill a fermenter with water, a sheet load of raw sugar and a "turbo yeast".....and that about it....+ filter???
So how do you carbon filter the spirit? I would be interested in doing this to make a keg of "alcopop" for a party.
Pok
Probably more accurate to call the finished result an "alchobase", as typically people think of "spirit" as distilled and 40%+ ABV.
Simplest way to carbon filter alcobase is to buy a few Kgs of activated carbon, add this to a 20 litre cube, and fill the cube with filterted spirit. Then shake up the cube everytime you go near it. This will allow the AC to go into suspension, and slowly fall through the alchobase to the bottom of the cube. Leave the mix for a few weeks, and all of the fusel oils will be absorbed into the AC.
You can buy AC cheaply on ebay. Search for "activated carbon". You can reuse AC many times before it gets saturated with fusel oils, and then it can be regenerated by heating it in the oven.
An alternative is available from your local HBS. They sell Z filters, which allow you to put in a few hundred grams of AC, and the alchobase travels slowly through the z filter, and drips out the end as clean ready to go alchobase.
Once you have your clean alchobase, test it for ABV. You can get a special alcohol hydrometer from your LHBS.
Now for the mixing. Best to do this on a small scale, and then get your recipe right, and then scale it up. Get a cold bottle of soda water, a 3-4 litre container, your alchobase and your mixer. Work out how much ethanol is in 500ml of your alchobase eg. 500*20%=100ml. Then work out the amount of water/syrup you need to add to get the mix to 5% ABV, by dividing the ethanol volume by 5% (0.05) eg with 100ml of ethanol in 500ml of alchobase, you need to make up the final mix to 100/.05= 2000ml or 2 litres. you already have 500ml, so you need to add 1.5 litres.
Work out how much syrup you need to add to 2 litres of liquid to get the flavour you want. You can get this from the instructions on the bottle, and test this dilution in 500ml of plain soda water. Adjust the syrup to taste.
Pour in 500ml of alchobase, the required syrup and (in this case) enough soda water to take the combined mix 2 litres. Drink and adjust to taste.
Once you have the recipe right, you can work out how much of each component to add to your cornie kegs, then chill them to under 4 degC and force carbonate them.
Drink and enjoy.
This is a great way to make up alchopops, and sure beats the extra tax slug thats coming up.
Barry