need some help on double walling pots

what I want to make is a double walled pot, I want to peirce the outer
"skin" to reviel the inner pot, but still have it a useful vessle.

Ive tried nesting letherhard pots, but the tops are cracking along the
lip seam, during firing and drying. I also tried doube throwing two pots
at once, like a salsa dish, only higher, but I dont have enough room
between the walls to continue to throw (my fingers wont fit) ..

I havent seen anyone else do this kind of form, som im kind of trying to
work it oout on my own....