America blocking clever person producing such food (7)
I believe the answer is:
sausage
'such food' is the definition.
'sausage' can be an answer for 'food' (sausage is a kind of food). I'm unsure of the 'such' bit.
'america blocking clever person' is the wordplay.
'america' becomes 'usa' (United States of America).
'blocking' is an insertion indicator (block can mean to plug a gap in something).
'clever person' becomes 'sage'.
'usa' placed inside 'sage' is 'SAUSAGE'.
'producing' is the link.
Can you help me to learn more?
(Other definitions for sausage that I've seen before include "Seasoned minced meat stuffed in casing" , "Part of a hot dog" , "Banger; snag" , "Assuage (anag.)" , "E.g. salami, bratwurst" .)