What does the cryptic crossword clue "Butcher divides stock in cooking vessel (7)" mean?

The wordplay uses a container (one word inside another). KILL (synonym="KILL") in SET (synonym="SET") = SKILLET The answer is SKILLET.

Butcher divides stock in cooking vessel (7)

Guardian Cryptic #26527 | 2 Down | 2015-03-24 flower