America blocks clever types producing such food (8)
I believe the answer is:
sausages
'types producing such food' is the definition.
I can't tell whether this defines the answer.
'america blocks clever' is the wordplay.
'america' becomes 'usa' (synonyms).
'blocks' means one lot of letters goes inside another (the inside letters form a 'blockage').
'clever' becomes 'sages' (I am not sure about this - if you are sure you should believe this answer much more).
'usa' inserted within 'sages' is 'SAUSAGES'.
Can you help me to learn more?
(Other definitions for sausages that I've seen before include "They may be eaten" , "Minced meat stuffed in casings" , "eg Hot-dogs" , "Minced seasoned meat stuffed in tubes" , "Bangers" .)