Order to carry out, endlessly creamy? (5)
I believe the answer is:
doric
'order' is the definition.
(Doric order is a classical architectural order)
'carry out endlessly creamy?' is the wordplay.
'carry out' becomes 'do' (doing is a kind of carrying out).
'endlessly' means to remove the last letter.
'creamy?' becomes 'rich' (as in rich or creamy food).
'rich' with its last letter taken off is 'ric'.
'do'+'ric'='DORIC'
'to' acts as a link.
(Other definitions for doric that I've seen before include "Of the oldest and simplest form of architecture" , "Ancient dialect" , "Type of classical architecture" , "Denoting a classic Greek style" , "In a classical Greek style of architecture" .)