Does moonshine mash go bad and when?

Moonshine MASH can go bad if not properly stored or if it's left too long before fermentation. The mash can develop off-flavors, spoilage bacteria, or mold, especially if exposed to air or contaminants. Generally, it's best to ferment the mash within a few days to a week after preparation for optimal results. If the mash smells foul or shows signs of spoilage, it's safer to discard it.