Alfresco grill (8)
I believe the answer is:
barbecue
'alfresco grill' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for barbecue that I've seen before include "Grill over an open fire" , "Open-air party with roast meats etc" , "Cure babe (anag.)" , "Alfresco meal" , "Meal outdoors cooked on a grill" .)