just so that everyone knows the real reason for this nerf has nothing to do with your metal prospecting, it is because jackass and jackoff once again have absolutely ZERO development foresight and made it so that any food "born" in a copper pot took on that purity, this means anyone with 30% or higher copper has been making foods with 200+ event points on them for the past 3 weeks.
which in turn is how several large factions (mostly the ones from haven and hearth, who conveniently always seem to know exactly what jorbs oversights are as soon as he makes them, and then regardless how many times it is reported are allowed to abuse it for weeks until it becomes common knowledge at which point a "fix" is issued.) already have characters pushing 80 stats or higher.