Delicious German bread, mostly covered in fresh salami (9)
I believe the answer is:
ambrosial
'delicious' is the definition.
(ambrosia was the mythical food of the Greek gods)
'german bread mostly covered in fresh salami' is the wordplay.
'german bread' becomes 'Brot' ('bread' in German).
'mostly' means to remove the last letter.
'covered in' means one lot of letters goes inside another.
'fresh' indicates anagramming the letters.
'brot' with its last letter taken away is 'bro'.
'salami' with letters rearranged gives 'amsial'.
'bro' placed within 'amsial' is 'AMBROSIAL'.
(Other definitions for ambrosial that I've seen before include "Like special food" , "Delightful" , "Divine" , "Heavenly" , "delicious" .)