Offer daughter iced-tea concoction (8)
I believe the answer is:
dedicate
'offer' is the definition.
(thesaurus)
'daughter iced-tea concoction' is the wordplay.
'daughter' becomes 'd'.
'concoction' indicates anagramming the letters.
'iced'+'tea'='icedtea'
'icedtea' is an anagram of 'edicate'.
'd'+'edicate'='DEDICATE'
(Other definitions for dedicate that I've seen before include "Devote, address, to" , "Devote to a sacred person or use" , "Commit" , "Inscribe or give over to" , "Devote (to), pledge (to)" .)