Broadcasting on TV, value a dish (3-2-4)
I believe the answer is:
vol-au-vent
'a dish' is the definition.
(type of pastry dish)
'broadcasting on tv value' is the wordplay.
'broadcasting' indicates anagramming the letters.
'on'+'tv'+'value'='ontvvalue'
'ontvvalue' anagrammed gives 'VOL-AU-VENT'.
(Other definitions for vol-au-vent that I've seen before include "Small puff pastry with fish or meat" , "Light, filled pastry shell" , "Small puff pastry case with savoury filling" , "Puff-pastry savoury" .)