When it comes to packing lunches, remember the rule: Keep hot things hot and cold things cold. Keeping food cold slows bacterial growth and keeps food safe. Harmful bacteria multiply rapidly in the “Danger Zone” - the temperatures between 40 and 140° F. Keep perishable food refrigerated until time to leave home. Include a frozen gel pack or frozen juice box with perishable food in the insulated lunch bag or lunch box. Use an insulated soft-sided bag if possible- it works best for keeping food cold. Use an insulated container or thermos to keep hot food hot - 140° F or above.
—Source: The University of Wisconsin, Madison
Good Neighbor Pharmacy, August 2014