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To make gin you first need to start with really clean neutral.
Make a double distilled spirit http://www.duckdistilling.com.au/blogpost/double-distillation Instead of proofing down to 40% you can leave at 95% OR for super clean spirit you can proof down to 40%, carbon filter and then distill back up to 90+% Heres my Gin recipe 1.75L 94% neutral (90-95% neutral will work) 30g Juniper 1 cardamon pod 1.35g grapefruit zest 0.70g lime zest 1.3g lemon zest 1g licorice root 1.4g coriander seeds .27g fennel seed 2 almond 0.5g cinnamon quill 0.7g Nutmeg 3 Peppercorns All whizzed up in a coffee grinder (except the citrus zest). I soak all the botanicals in the neutral alcohol for exactly 12hours. Then it is diluted with water to 4L (40% abv from memory) and chuck the whole lot in the still. Discard the first 15ml and keep the next 2L. The first 15mL contains harsh juniper oils Dilute to 45% Good to drink straight away but the flavour melds a bit over to coming weeks. Recipe can be scaled up, just multiply everything.
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When making neutral spirit it is very important to filter the spirit through carbon as it removes a substantial amount of bad tasting contaminants. Personally I recommend using a fuselex carbon filter because they are made from stainless whereas a lot of other filters are made from plastic. Some plastics are soluble in alcohol, not something you want to be drinking! To filter the spirit cut it down to 40% with water (use this calculator) and filter as slowly as possible through the carbon. You can filter 10-20L of 40% spirit through 300g of carbon.
If you do not want to buy a carbon filter you can age the neutral spirit on carbon for 2-3 weeks. Use 10g carbon per litre of spirit and shake the container occasionally. Double distillation of you neutral spirit is the most important method you can use to improve the quality and quantity of your finished alcohol. 1. Distil your wash as normal, you do not have to discard anything as you will do it on the second distillation anyway. This is called a "stripping" run because you "strip" the alcohol.
2. Collect the spirit and dilute to 45% using the calculator found here 3. For every 8-10L spirit add 1 tablespoon of sodium carbonate (not bicarbonate). This is sold as washing soda at the supermarket. 4. Run the still as normal, discarding the first 50-100mLs. This is called the "spirit run" 5. Dilute to 40% and carbon filter To save time you can strip the alcohol from two or three ferments and then do a single spirit run. Tomato Paste Wash (or TPW) is a different sort of wash that is much cleaner than a turbo wash. Tomato paste wash has the downside of yielding less than a turbo wash but at the same time is much cheaper. 6kg sugar or 7kg dextrose
250g tomato paste 70g bakers yeast (or 15g EC-1118 yeast) Add sugar or dextrose and tomato paste to the fermenter. Half fill the fermenter with water. Stir until the sugars have dissolved. Top up fermenter to 27L. Sprinkle yeast on top and ferment at 25-35C When gravity reaches .990 on your hydrometer transfer to the still and run. I make a 27L wash to ensure I definitely get 25L into the boiler. Turbo wash is the easiest wash to make however due to the high alcohol content and the nutrient mix, the resultant alcohol can develop an off taste that many describe as akin to methylated spirits. 7kg sugar or 8kg dextrose
1 sachet of turbo yeast Fill your fermenter with either sugar or dextrose. Top up to 25L with water and stir until sugar or dextrose is dissolved. Add turbo yeast and ferment at 22-35C When gravity reaches .990 on your hydrometer transfer to the still and run |
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