Fish dish? I miss a fish’s tail in a stew (7)
I believe the answer is:
Here is my best explanation:
'fish dish?' is the definition.
(I've seen this before)
'i miss a fish's tail in a stew' is the wordplay.
'tail' indicates one should take the final letters.
'in a stew' is an anagram indicator.
The final letter of 'fish' is 'h'.
'imissah' is an anagram of 'SASHIMI'.