… top with whipped cream right away! (4)
I believe the answer is:
acme
'top' is the definition.
(synonyms)
'whipped cream right away' is the wordplay.
'whipped' indicates an anagram.
'right' becomes 'r' (common abbreviation).
'away' is a deletion indicator.
'cream' with 'r' taken away is 'ceam'.
'ceam' with letters rearranged gives 'ACME'.
'with' acts as a link.
(Other definitions for acme that I've seen before include "Top; peak" , "Highest stage of development" , "Summit of achievement" , "Pinnacle" , "Zenith - optimum" .)