Shifts preparing starters of escargots, whiting and bouillabaisse (4,4)

'bouillabaisse' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

'shifts preparing starters of escargots whiting' is the wordplay.
'preparing' indicates an anagram (I've seen 'prepared' mean this).
'starters of' suggests taking the first letters.
The initial letters of 'escargots whiting' is 'ew'.
'shifts' is an anagram of 'fishst'.
'fishst'+'ew'='FISH STEW'

'and' acts as a link.

Can you help me to learn more?