I attempted to but everytime I'd try to stay in a single-player world, my game would crash. My goal was to replicate the foods I tried to create in a MP world that was using the .14 version and doesn't want to update in fear of breaking everything else after that occurred in their last MP world.
Edit 1: I'll try reinstalling Vintage Story itself, as I believe the root of the problem is from a lack of textures of the newly added foods (which my friends reported they did have textures for them)
Edit 2: I'm not entirely sure on if it was missing textures or if I updated incorrectly (and thusly more than just textures broke) but reinstalling fixed the issue.