Candied ___ (4)
'candied' is the definition.
(synonyms)
This is all the clue.
(Other definitions for glace that I've seen before include "Iced" , "Crystallised - candied" .)
(Other definitions for yams that I've seen before include "Sweet potatoes" , "Roots" , "Edible tubers from the tropics" , "vegetables" .)