The asparagus served to you for starters is delicious (5)
I believe the answer is:
tasty
'delicious' is the definition.
(I've seen this before)
'the asparagus served to you for starters' is the wordplay.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'for starters' suggests taking the first letters.
The initial letters of 'asparagus served to you' is 'asty'.
't'+'asty'='TASTY'
'is' is the link.
(Other definitions for tasty that I've seen before include "Toothsome" , "With a nice flavour" , "Scrumptious" , "Having good flavour" , "Appetising, having pleasant flavour" .)