Here are some tips to help you prepare for safe and tasty picnics. With a proper cooler and ice, most foods are safe for short periods of time. Make several sandwiches at one time. Wrap each one by itself. Put all the wrapped sandwiches in a big plastic bag and freeze them.
Simple sandwiches freeze best.
Try using peanut butter, cheese, sliced meat, or poultry. If you do not have a cooler, take fresh, canned or dried fruits, raw vegetables, hard cheese, canned or dried meats or fish, dry cereal, bread, peanut butter, crackers, or cookies. Pack all food in clean plastic wrap or sandwich bags. Use an insulated cooler if you have one. Include a cold source in the cooler or picnic basket, such as commercial ice packs or make your own by placing ice cubes in a plastic bag, then wrap the bag in foil.