I've not attempted the thermos technique you talked about, but I've experienced poppy pod and poppy seed tea go nasty quite immediately when not refrigerated. i dislike looking at great pods goo to waste...which I assume is why i use the strategy i do. Forgot so as to add, CBN https://angelorwzax.buyoutblog.com/33753448/the-buy-dried-poppy-pods-diaries