One can eat it for tea in outer Southwark (5)
I believe the answer is:
steak
'one can eat it' is the definition.
I can't judge whether this defines the answer.
'tea in outer southwark' is the wordplay.
'in' is an insertion indicator.
'outer' suggests removing the centre.
'southwark' with its middle taken out is 'sk'.
'tea' placed inside 'sk' is 'STEAK'.
'for' is the link.
Can you help me to learn more?
(Other definitions for steak that I've seen before include "Meat (rare, medium or well done?)" , "Slice of meat or fish" , "Porterhouse, perhaps?" , "Portion of meat" , "High-quality cut of beef" .)