Yup, those are calices, it’s the bottom part of the flower, that holds the petals together.
I thought the calyx was the green part that holds the flower by its base.
like this?
and the flavor they’re talking about sounds like hibiscus petals, which are supposed to be citrusy.
You can also eat the petals, but the stuff you’ll find commercially are calices. I assume the petals are perhaps too fragile to process ? https://www.tyrantfarms.com/hibiscus-a-tasty-addition-to-your-edible-landscape-or-garden/#edible-parts-hibiscus-sabdariffa
no, apparently the petals are much thicker than I thought they were, which is funny because I grew up with them.
but all of these candied snacks and hibiscus tea and everything calls for the petals.