Spill the tea (4)
(Other definitions for dish that I've seen before include "broth?" , "Container for serving food" , "What's presented on salver" , "Attractive person" , "Sky can be seen through this" .)
(Other definitions for gossip that I've seen before include "Tittle-tattle" , "Scandalmonger" , "Busybody" , "Casual chit-chat" , "'Rumours, scandal (6)'" .)