I bought the container (pink with cat) to my now 6-month girl go (eg a longer drive) can feed his lunch pureed vegetables warm. My plan was to hot fill the broth and to feed him after about 2 hours. Now I read in the description that the container must NOT be used for hot workings of baby food. I do not understand what happens there when I einfülle a fresh porridge hot and feed after some time out of the container? I stand on the line?