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Welshbrew

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Everything posted by Welshbrew

  1. Welshbrew

    Checking if maceration is complete

    Hello I create my gin by macerating at room temperate for 7 to 10 days. Up to now I have determined if maceration is done by taste and colour. Not exactly reliable. And certainly not a scale when I open my distillery. Is there any equipment that will give me some exact figures of how the liquid has changed? It starts as ethanol/water at 40% ethanol by volume. All solid ingredients are then added, before being removed before transferring to the still. What about the Anton Paar density meters like the DMA 35? Or should I be looking at a refractometer instead? Thanks
  2. Welshbrew

    Checking if maceration is complete

    I'm using a copper alembic still. Botanical charge is just over 30g per litre, at 40% ABV maceration. I have pretty much nailed my recipe. This is at 10 litre testing size. Problem is moving to 100 and 200 litre sizes. It will be much colder in January than July. The maceration will take longer due to the ethanol mix being colder. This is what I want to measure. Establish a value when maceration is complete (conductivity, PPM, SG, refractive index) then test the maceration until complete. Taste is not reliable. Fully stop.
  3. Welshbrew

    Checking if maceration is complete

    The ethanol/water mixture takes time to take the flavour out of the solid ingredients. After 1 day the flavour would be too weak to be worth distilling. After 12 days it will be definitely ready. Now it could be ready after 7 days. Or 8 days. That is what I want to measure instead of just waiting too long to be sure. I reckon measuring electrical conductivity may work - it will give an indication of the number of ions dissolved in the liquid.
  4. Welshbrew

    Checking if maceration is complete

    I know the proof will not change. Sugar will be very low, probably too low to measure. Wonder if refractive index could be used?
  5. Hello I am about to sign a lease on premises for my distillery. The fire safety officer has asked these questions: 1) Please confirm on how you intend to mitigate against the risk of fire and explosion 2) Please confirm that you will have adequate natural or mechanical ventilation in the distillery I don't intend to worry about the finer points of health & safety until I employ the services of a consultant. I cannot do that until I know the exact layout of the premises after moving in, and the distillery layout. How should I answer? Any ideas? I have already explained that I don't intend to put 96% ethanol into the stills. The ethanol will be diluted to 35% before putting into the stills - this was something they were worried about. Is anybody using floor based fans? It is not possible to put in roof fans since there is a railway above. Edit to add: One thing they are worried about is the transfer of 96% ethanol to the diluting drum before transfer to the still. I've explained that a hand pump will transfer the ethanol into another drum with a lid on, so no vapour escapes.
  6. Welshbrew

    Mitigate against the risk of fire and explosion

    Thanks If anyone from the UK is reading this, you need a DSEAR compliance engineer, and they charge around £700 per day. Hoping no more than 3 days work, but who knows.
  7. Welshbrew

    Mitigate against the risk of fire and explosion

    Just heard back from them - they have accepted my application 😀
  8. Welshbrew

    Mitigate against the risk of fire and explosion

    I've stated that I will comply with DSEAR 2002 regulations, and that I need a compliance engineer to get compliant. We'll see what they say.
  9. Welshbrew

    Mitigate against the risk of fire and explosion

    Right now - from me. I'm reluctant to employ an engineer until I have the lease.
  10. Welshbrew

    Mitigate against the risk of fire and explosion

    Thanks, very useful. However, I'm in the UK. We are covered under the Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR).
  11. Welshbrew

    Mixing ethanol and water

    As most people know, if we mix ethanol and water, we don't end up with the sum of the parts in volume. For example, if we mix: 50 litres ethanol 50 litres water We end up with 96 litres. Not 100. My question is this: With the decrease in volume, we don't lose any mass of ethanol, so has the ABV increased? i.e. is the ABV 50% or has it increased? I'm trying to do some cost analysis of the total loss of ethanol throughout the distilling process to fully cost a micro distillery. I've already got some pretty accurate figures on how much I will lose in the actual distilling stage, i.e. recovering the ethanol from heads and tails. In the UK I need to pay for duty up front (initially) and so my ethanol is around £30 / $39 per litre. I don't have access to 96% NGS yet to actually try this.
  12. Welshbrew

    Mixing ethanol and water

    Funny you should say that. I downloaded it a few days ago. Don't understand it yet, though. 😕
  13. Welshbrew

    Mixing ethanol and water

    Thanks meerkat. That makes sense.
  14. Welshbrew

    Odin on Gin

    Why filter when bottling? If you need to filter at this stage, maybe its too late?
  15. Welshbrew

    UK Botanical suppliers

    OK, I might give them a go then. Which juniper did you go for? £12 a kilo or £15 a kilo? Which coriander seeds did you buy? The ones from Romania.
  16. Welshbrew

    UK Botanical suppliers

    BuyWholeFoodsOnline or Just Ingredients. I am not open until next year, currently in R&D stage.
  17. Welshbrew

    UK Botanical suppliers

    Organic Herb Trading look expensive. £12.00 + VAT per kilo of juniper. £7.70 + VAT per kilo of coriander.
  18. Welshbrew

    UK Botanical suppliers

    They supply coriander seeds from England. I didn't know coriander seeds were even grown in England until I visited their stand at Craft Distilling Expo in London last week. The smell was amazing.
  19. Welshbrew

    Starting out with a smaller still

    Nice one. What model is the 50 litre still?
  20. Welshbrew

    NGS UK Suppliers

    Langley Distillery. alcohols.co.uk is the parent company.
  21. Welshbrew

    On stating botanical loads

    I would advise on stabilising your g/litre as the amount in the boiler before distillation. For example, I macerate at 50% ABV. I look for 33-38g ingredients per litre, at 35% ABV, the strength I distill at. Depends on the type of gin. Also bear in mind that some botanicals are not as flavour concentrated, so you need to use more. So when macerating at 50%, I use 43% more ingredients per litre. Example: 51.1 g/litre, 50% ABV When diluted to 35% this would be: 35.8 g/litre
  22. Welshbrew

    Starting out with a smaller still

    If you are taking the "artisan" approach then forget diluting with NGS after distilling. Single shot only. Only add water to dilute. And don't make the same assumption I made - that you can up the ABV in the boiler to 50% to increase yield. 30% to 35% max. Flavour profile will be rubbish at 50%. And don't get greedy with the tails. You can always recycle the ethanol in the tails in a reflux still.
  23. Welshbrew

    UK Botanical suppliers

    Aye, Tommy and Michael at Beacon. However, minimum order is £500. Juniper and coriander are supplied as 25kg minimum. That will create a lot of gin. Probably best to use a smaller supplier until you reach volume.
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