Tea taken in fine porcelain (5)
I believe the answer is:
china
'fine porcelain' is the definition.
'china' can be an answer for 'porcelain' (china is a kind of porcelain). I am unsure of the 'fine' bit.
'tea taken in' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'taken' is an insertion indicator.
'cha' going around 'in' is 'CHINA'.
Can you help me to learn more?
(Other definitions for china that I've seen before include "service" , "Delicate porcelain form Orient?" , "Ceramic; mate" , "Country; friend (slang)" , "World's most populous country" .)