Go better than alfresco party (5)
I believe the answer is:
outdo
'go better' is the definition.
'outdo' can be an answer for 'better' (to outdo is to beat or do better than). I'm not certain of the 'go' bit.
'alfresco party' is the wordplay.
'alfresco' becomes 'out' (an alfresco meal is eaten outside).
'party' becomes 'do' (do can informally mean a party).
'out'+'do'='OUTDO'
'than' is the link.
Can you help me to learn more?
(Other definitions for outdo that I've seen before include "Best" , "Surpass someone at something" , "Perform better than, be superior to" , "Surpass, go one better than" , "Eclipse" .)