What's the material of the lunchbox? Now there are plastic, stainless steel, wooden, experienced to say
If your home is used, of course, is the best stainless steel, not only durable and unlike the plastic melts release of harmful substances in the environment of high temperature, although very environmentally friendly wood but easy to breed bacteria.
If not for their own use, I recommend the use of corn starch, the texture is a bit like plastic and paper of the complex, not only is non-toxic, easy degradation, good for the environment, as the technology improved, it should cost is not very expensive.
Ordinary plastic Bento boxes are easy to release toxic substances, and of course, there are completely environmentally friendly non-toxic medical plastic texture, but the cost is high, and good even more expensive than stainless steel.
