Popular breakfast TV programme broadcast (6)
I believe the answer is:
cereal
'popular breakfast' is the definition.
'cereal' can be an answer for 'breakfast' (I've seen this before). I am not certain of the 'popular' bit.
'tv programme broadcast' is the wordplay.
'tv programme' becomes 'serial' (television serial).
'broadcast' indicates a 'sounds like' (homophone) clue (how the word might sound on the radio or TV).
'serial' is a homophone of 'CEREAL'.
Can you help me to learn more?
(Other definitions for cereal that I've seen before include "Something for brekkie" , "Eg, wheat, rye, corn" , "Edible grain for breakfast" , "Breakfast food made from grain" , "Breakfast dish" .)