Fashionable medico has particular kind of food (6)
I believe the answer is:
modish
'fashionable' is the definition.
(similar in meaning)
'medico has particular kind of food' is the wordplay.
I cannot really see how this works, but
'of' could be 'o' and 'o' is located in the answer.
'medico' could be 'md' (synonyms) and 'md' is present in the remaining letters.
The remaining letters 'ish' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for modish that I've seen before include "in the latest fashion?" , "In vogue or fashion" , "Temporarily fashionable" , "In fashion or style" , "I'm shod in the current fashion" .)