Restaurants want these snails trim, and chef mostly performs (8,5)

'restaurants want these' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'snails trim and chef mostly performs' is the wordplay.
'and' says to put letters next to each other.
'mostly' means to remove the last letter (most but not all of the word).
'performs' indicates an anagram.
'chef' with its last letter taken off is 'che'.
'snails'+'trim'='snailstrim'
'snailstrim' after 'che' is 'chesnailstrim'.
'chesnailstrim' anagrammed gives 'MICHELIN STARS'.

Can you help me to learn more?