Be careful with wrapping potatoes tightly in aluminum foil. Metal foil is completely impermeable to air. If you’re not careful, anaerobic bacteria such as C. bo

Be careful with wrapping potatoes tightly in aluminum foil. Metal foil is completely impermeable to air. If you’re not careful, anaerobic bacteria such as C. botulinum can grow on foil-wrapped potatoes and cause botulism [1]. It’s always a good idea to either puncture the foil or keep the foil wrapped loosely unless the potatoes are still hot (above 140F). [1] https://www.cdc.gov/botulism/prevention.html https://www.cdc.gov/botulism/prevention.html