Actually only origin yeast leads to such outcome. But what would be if intoxication is an outcome of using an invalid ingredient or an invalid process step?

Something like a default recipe handler is needed to catch unhandled processing steps. Unhandled is meant in the sence that it is not covered by some recipe.

For yeasts we could also add something like this. For example a default handler would be that a spoiled yeast is produced in case of using an improper fluid.

Brewing and fermentation work so far. Need a spoiling feature for yeasts to finish the task.

Hopefully spoilage would be a completely optional option.

We can add a configuration option to disable spoilage.

Configuration added. Feature can be disabled in growthcraft-cellar.cfg

Implemented for boozes. For yeasts a follow up issue must be created.

I'd suggest that an invalid recipe leads to poisoned.