Unusual way steak served, perhaps? (4)
I believe the answer is:
rare
I believe this clue is a triple definition!
'unusual' is the first definition.
(rare can mean unusual or odd)
'way steak served' is the second definition.
(a steak can be served rare)
'perhaps?' is the third definition.
(a steak can be served rare)
(Other definitions for rare that I've seen before include "(Of meat) red" , "Still red inside (as hens' teeth?)" , "Seldom encountered" , "Rear up to be uncommon" , "Seldom seen or met" .)