So long tempted and tried avocado for starters (2-2)
I believe the answer is:
ta ta
'so long' is the definition.
(both are ways of saying goodbye)
'tempted and tried avocado for starters' is the wordplay.
'for starters' says to take the initial letters.
The first letters of 'tempted and tried avocado' is 'TA-TA'.
(Other definitions for ta ta that I've seen before include "Adieu" , "So long!" , "Informal and repetitive goodbye" , "Informal farewell or thank you" , "Bye!" .)