Plan to consume once again aromatic liqueur (10)
I believe the answer is:
chartreuse
'aromatic liqueur' is the definition.
(Chartreuse is a type of liqueur)
'plan to consume once again' is the wordplay.
'plan' becomes 'chart' (chart can mean a plan or diagram).
'to consume once again' becomes 'reuse' (use or consume a second time).
'chart'+'reuse'='CHARTREUSE'
(Other definitions for chartreuse that I've seen before include "Pale green-yellow colour" , "Green-yellow liqueur" , "drink" , "Green or yellow liqueur made by monks" , "Carthusian liqueur" .)