I have a pepperoni casted in resin, I don't really know what kind of resin it is, but you may all ask me questions if you like and I'll answer them with my best ability.
Personally I bet that it will mold within one year.
To define mold, I really just mean decompose, turn into vinegar, or otherwise become not a clean pepperoni similar to the one that was originally casted.
This image is of the back of the object, it is black glitter inside the resin cast.
The other image below is the front, showing the resin casted pepperoni with the pepperoni in view.
1,000
@EstMtz it currently sits shaded in my room from the sun, the sun shines through my window and diffuses in my room pretty good cause I have light colored walls, but it is placed behind my computer so it's definitely shaded.
As for temperature, it's summer in California and I'm cheap and don't run the AC very much, it often gets to about 85 degrees F in my room.