Relish chicken pad thai regularly (8)
I believe the answer is:
cocktail
'relish' is the definition.
(cocktail is a kind of relish)
'chicken pad thai regularly' is the wordplay.
'chicken' becomes 'cock' (cock is a kind of chicken).
'pad thai regularly' becomes 'tail' (I can't explain this - if you can you should believe this answer much more).
'cock'+'tail'='COCKTAIL'
Can you help me to learn more?
(Other definitions for cocktail that I've seen before include "Harvey Wallbanger, for example" , "snowball?" , "Mixed alcoholic drink or prawn appetiser" , "Mixed beverage" , "Manhattan, perhaps" .)