Meeting to cook tacos (5)
I believe the answer is:
ascot
'meeting' is the definition.
(horse racing meeting)
'cook tacos' is the wordplay.
'cook' indicates an anagram.
'tacos' anagrammed gives 'ASCOT'.
'to' is the link.
(Other definitions for ascot that I've seen before include "Town with racecourse" , "Racecourse with royal associations" , "Necktie with wide square ends" , "Royal racing venue" , "Fungus affecting wood" .)