Savoury cake politician dipped in salt pot (7)
I believe the answer is:
crumpet
'savoury cake' is the definition.
'crumpet' can be an answer for 'cake' (I've seen this before). I'm not sure about the 'savoury' bit.
'politician dipped in salt pot' is the wordplay.
'politician' becomes 'MP' (Member of Parliament).
'dipped in' indicates putting letters inside.
'salt pot' becomes 'cruet' (I can't explain this - if you can you should believe this answer much more).
'mp' put within 'cruet' is 'CRUMPET'.
Can you help me to learn more?
(Other definitions for crumpet that I've seen before include "Round yeast cake eaten hot with butter" , "Thick, soft porous cake for toasting" , "Griddle cake" , "teatime treat!" , "Thick soft cake with a porous texture" .)