Looks Delicious ! A Perfect idea to Make your picnic incredible. I love the way you have managed to keep everything in a proper manner. this is new for me, as far as i know hotpot is the box, which we use to keep our hot thing hot for a little more time. so, that we could eat them after short period of time. We also use them when going on to picnic or some party. I would love to try this idea with my family :) Thanks for sharing.
I think hotpot can have different meanings, and yes there are some that are used to keep food warm, great if you're taking packed lunch to school and work.