If you're out and about during the school holidays, a thermos can be a great alternative to the usual packed lunch of sandwiches (this is a great alternative for school as well). To keep its heat, the food needs to have some liquid, so left over soups, casseroles and pasta are fantastic options, as are 2-minute noodles and warm drinks (see last month's newsletter).
To keep your food safe though, you need to take some precautions (Safe Sound Family has some safety tips for using your thermos). To keep your thermos warm and your food at a safe temperature, fill your thermos with boiling hot water, attach the lid and let it sit for 5-10 minutes. Drain the water, quickly wipe it dry (unless you're going to use some of the liquid with the food) and immediately place your piping hot food into the thermos. Make sure it is well sealed.
To test how hot your thermos stays during the day, fill it with boiling hot water and leave for a few hours or the entire day (try this a few times for different lengths of time). Check the temperature and you'll have a guide as to how long your food will stay warm.