Taste a boring dish (6)
I believe the answer is:
palate
'taste' is the definition.
(palate can mean an ability to distinguish tastes)
'a boring dish' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
'dish' could be 'plate' (plate is a kind of dish) and 'plate' is present in the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for palate that I've seen before include "One may savour" , "part of trap" , "having ability to appreciate good food" , "A plate (anag.)" , "where taste is considered" .)