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Browningguy

Newbie
Original poster
Mar 21, 2025
1
0
Hi everyone, this is my first time posting. I’ve been using these forums for a while now, and they’ve been incredibly helpful. My family has a tradition of making large batches of deer sausage every year. We cold smoke them and then dry age them by hanging them in the smokehouse for about six weeks.

Over the past two years, we’ve noticed an increase in mold growth on the casings while they hang. I’ve seen many posts here mentioning that "white hairy mold is okay," but in our case, the mold starts out white and then turns blue, green, or even brown. If not caught quickly, it seems to eat through the casing.

To combat this fungus, as soon as we notice it, we clean the casings to remove the mold and spray them with Potassium Sorbate. After a few applications, the mold slows down, but we’d feel much better if it didn’t grow at all. Checking and cleaning hundreds of sticks multiple times a week is a lot of work. There has to be a better way.

This year, we went a step further by thoroughly cleaning and pre-treating each stick with Potassium Sorbate before putting them into the smokehouse, but we still experienced mold growth.

The smokehouse is not climate-controlled. However, it is in a covered area that stays cool, doesn’t get wet from rain, and isn’t exposed to direct sunlight. It also has vents to allow airflow.

Any suggestions on how to prevent mold growth, thoughts on the mold in the pictures, or ideas for improving our process would be greatly appreciated.
 

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How are you controlling the humidity? With that much meat hanging in your smokehouse, the chubs are evaporating a lot of water and this is keeping the humidity high. Bad molds really start getting a strong foot hold with consistent humidity around 85%; and this sounds like your case with how fast and strong the mold comes back with the sorbate.

Solution- get a dehumidifier. preferably one that does not also add heat to your smokehouse.
 
Last edited:
...or- reduce the volume of meat in the smokehouse to reduce the volume of evaporative moisture from the chubs....and increase the spacing between the chubs.
 
also- is there any airflow at all inside the smokehouse? ideally, you want about 4" per second airflow. If you hang a long 3' or so piece of cotton butchers twine in the smokehouse, the bottom of the string should wobble around in about a 1/8" circle. that is 4" per second airflow. a very small, low speed fan would work.
 
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