Kids' barbecue staple (4)
I believe the answer is:
ribs
This clue is a double definition.
'kids'' is the first definition.
(I've seen this in another clue)
'barbecue staple' is the second definition.
(I've seen this in another clue)
(Other definitions for ribs that I've seen before include "Chest bones, tasty when spare" , "Curved bones around the chest" , "Arched bones in the upper body" , "Pairs of curved bones" , "Is making fun of" .)