It'd be helpful if the config file showed all of the available features, such as giving examples for metadata and oredict support in item specification, as well as how to set up entities for preservation.

It's actually more pressing than I thought. I get a crash trying to specify metadata using the expected I:"modid:itemid:metadata"=days format. Can you give me a pointer?

Okay, it turns out that format was fine, but something else was wrong with my config file. I'll keep investigating, and open a separate report if need be.

aha!
The script I was using to generate the config file had incomplete data, so I had a few lines that were turning up I:"modid:itemid:"=days. Note the lack of a number after the second colon.

Totally my bad.

A doc update is on the todo list. In addition to the source code, the basic test plan might help with info also: https://github.com/Stormwind99/FoodFunk/wiki/Test-Plan