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JustAndy last won the day on August 16 2017

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About JustAndy

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  1. Industry news/research websites/magazines?

    https://thewhiskeywash.com/ http://www.spiritedbiz.com/ https://www.winebusiness.com/ http://artisanspiritmag.com/ https://www.thespiritsbusiness.com/ http://www.alcademics.com/2017/01/new-booze-2017.html
  2. Analytical Labs

  3. White Whiskey

    The House Spirits example was also approved probably 10+ years ago, so there has probably been some turn-over and clarifications to the approval process.
  4. Barreling Question

    I wouldn't sweat it. 4.5 gallons isn't all that much head space, we see that liquid level in the barrel about a year after filling. We also have some half-filled barrels, in my experience the extra head space helps move the spirit along but also increases the angel share a bit. All the half-full ones are where I can see them in case they develop leaks as I've heard that can happen but haven't seen much evidence of it.
  5. Proof affecting oxidation in barrels?

    Think about how much easier 12% abv wine oxidizes vs 22% abv port.
  6. Proof affecting oxidation in barrels?

    http://www.iscbarrels.com/2018/01/30/oxygenation-part-1/ "To add further complication, the effects of these variables are not static throughout the aging process. As the barrel ages, the wood becomes increasingly more saturated with alcohol. As this happens, the rate at which the oxygen can permeate through the wood changes. The diffusion of oxygen in air is multitudes greater than that of its diffusion through water. This suggests that as the barrel becomes more saturated over time, the rate at which oxygen transfers through the wood slowly decreases. Furthermore, the diffusion coefficient of oxygen in ethanol differs from that of water which would suggest that entry proof has an effect as well."
  7. Product finishes too hot

    Do you make the base or use a sourced GNS? If you use GNS, do you perform QA on each lot? GNS quality can vary a lot depending on the producer/source, and if you get it through an intermediary you might be getting it from a different producer without being informed. If you make the base yourself, did you compare that to your typical starting point? Changes in fermentation temps, yeast strain, yeast nutrients, and mash abv can all have an impact on flavor or perception of alcohol 'heat'. Similarly, your cut points can have a big impact, and seasonal changes in cooling water temperature can have an impact on still performance and cut points which might also change the perception of alcohol. I wouldn't discount getting your botanicals from a different source, especially as many gin botanicals can have a 'heat' of their own (ginger, cubeb, cardamom, grains of paradise, coriander to name a few). Juniper from different sources can dramatically shift the flavor, I have trialed some which had significantly more bite/harshness/chemical aroma than others. Sitting for 2 months after distillation (or even a week) will also change the mouthfeel and aroma of the distillate quite a bit.
  8. Product finishes too hot

    Providing more information about what you are making and how you are making it would make it much easier to provide answers or suggestions.
  9. Contaminating Condensing Column

    The way it was explained to me: There is a DIN port near the still dump valve, designed to connect via hose to the inline port on the CIP pump. So you could mix your chemicals in the still body and recirc out the bottom DIN port using the CIP pump. I would be wary of doing it that way as it seems like a good way to clog up the spray balls in the column with solids, and those spray balls are solid and not attached with a cotter pin so it seems like a nightmare to clean them if they get clogged. You can also screw off the sightglass on the condenser water collection tank and add your chemicals there.
  10. Greenish/Yellow Heads in brandy from Red wine

    In between various distillations of the syrah we distilled pear mash, rye mash, and chardonnay wine none of which had any color tint. The syrah had a tint regardless of the product run before it, and steam cleaning/flushing/citric rinsing prior to distilling the syrah had no impact on the tint. We didn't make the wine, I am going to follow up with the winery to get some more details about the process. We've distilled a lot of other wine for them, and they are an extremely well-regarded winery but it seems like it must be some artifact of the wine making process. If it was something related to grapeseed/maceration, it seems like it would also be a problem when distilling grappa as the pomace is rarely deseeded before distillation but we've never had a tint to the grappa from red wine. We sent the tinted fraction in for copper testing, which showed only a normal/nominal amount of copper so that is ruled out. With time, there was some sediment that started to form and settle out, which seemed to reduce the color of the tinted fraction. Based on that, we ran it through the fine depth-filter pads we use pre-bottling and that removed all of the color. Mysterious..
  11. Contract Malt Whiskey Production

    Jonathan, I'll pass your information to this client. I'm at the end of what they engaged us for, so I'm not sure their next steps.
  12. Mashing technique and Brix degree

    How much malt to how much wheat? Is the wheat malted? How is it being milled? The mash also seems way too thick, at 10 lb / gal (we mash closer to 2 lb per gal...) You also likely need to do something to break down the wheat
  13. Greenish/Yellow Heads in brandy from Red wine

    The dephleg I believe is all copper. The boiler is about 300L, so too small to get inside but you can reach everypart of it from the manway. I will try to post a picture, the color tint is light enough that it is very hard to photograph. When running out the tails eventually the spirit is very waxy/oily, but nothing black, ashy, flecky. It looks just like tails from other washes, there is no color in the late hearts or tails. We have a parrot, which actually designed with a sort of phlegm separator which holds back wax and etc which floats at the top. I distilled a different wine (chardonnay) and the distillate has no color tint, which leads me to suspect some kind of fermentation/nutrient byproduct from the syrah wine rather than something from the still.
  14. Greenish/Yellow Heads in brandy from Red wine

    That was what I thought as well, but it was suggested by our local pHD in whiskey at Oregon State so we are exploring it. It was also mentioned by Meerkat in another thread who said "The closest I have seen to your experiece was a yellow-green heads stream in a continuous neutral spirit plant. The plant wisdom was that this was diacetyl (butanedione). In this plant the fermenters were steel, the stripper column mostly copper and the rectifier fully stainless steel." We didn't ferment this wine, but the winery mentioned the grapes were not in good shape compared to their usual material so perhaps it is a fermentation byproduct issue?
  15. Greenish/Yellow Heads in brandy from Red wine

    Redistilling the green fraction without any wine in the still didn't produce a different result. It seems unlikely it is copper related, so we are investigating it possibly being diacetyl. There isn't an aroma or flavor component to it that I can detect, but the aroma of heads might just make it hard to seperate out.