Rick who cooks some langouste invitingly (5)
I believe the answer is:
stein
'rick who cooks' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'some langouste invitingly' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'STEIN' is hidden in the letters of 'langouste invitingly'.
Can you help me to learn more?
(Other definitions for stein that I've seen before include "Gertrude ---; US writer" , "German earthenware beer mug" , "Earthenware beer jug" , "Large earthenware beer mug" , "Beer-mug" .)