Neal Haarberg said:Thanks Tod. That's a slick setup. I typically do 10lb batches and have considered converting my minifridge. I was always under the impression that a humidifier was required as well to keep it from case hardening. Not being a chest I don't think cracking the door is a good idea. The minifridge is used for aging ducks during the season and keeping corny's of my cider cold the rest of the year so it would be great if I can make it work. I have been wanting to do dried sausages for a long time. I find it interesting that you do not use a humidifier like I have seen in all my research and use the freezer as just an insulated box. Now you have me thinking with the environmental conditions we have here in the Northwest this time of year I may have some other options to make something work with what I have on hand.
10 pounds would generate plenty of humidity in a minifridge. I've done 20 pounds in a 12 cubic foot freezer in the middle of our dry winter (30% in my basement now) and the humidity will go as high as you want if you close it tight, then crack it to bring it down to what you want. I feel like a humidifier is only needed if you are doing small amounts. You see guys with 3 sausages in a mini fridge - they need extra humidity.
Case hardening is a struggle for me because I get gray fuzzy mold if I maintain humidity in the ideal range of 80% early on when the casings are still soft. I rush to get down to the 70% range and then bring it back up after I get some hardening (that keeps the mold at bay). I end up wiping the sausages down with salt water to keep the mold at bay too. I get a great product, IMO, it is just a little fussy. Needs to be watched.
Just an interesting note, with that 40 pounds this year I got a lot of evaporative chilling (new fan moves more air) and when the sausages still had a lot of water in them it brought the temp inside the chamber down 10 degrees F. I could have actually used some heating since inside the chamber it was 55F, when I'd have liked it a bit warmer.
Good luck if you try it, it sounds like you know a lot more about it then I did when I started. Happy to answer any questions, but it seems like you are in a good spot.
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