A pal and I can do wicked rum concoction (4,6)
I believe the answer is:
pina colada
'rum concoction' is the definition.
(cocktail containing rum)
'a pal and i can do wicked' is the wordplay.
'and' is a charade indicator (letters next to each other).
'wicked' indicates anagramming the letters.
'a'+'pal'+'i'+'can'+'do'='apalicando'
'apalicando' anagrammed gives 'PINA COLADA'.
(Other definitions for pina colada that I've seen before include "Cocktail of rum, pineapple juice and coconut" , "Drink made of pineapple juice, coconut cream and rum" , "alcoholic one" , "rum-based potation" , "Perhaps contents of cocktail glass" .)