Soviet team prepared protein-rich food (3,4)
I believe the answer is:
red meat
'protein-rich food' is the definition.
I can't tell whether this defines the answer.
'soviet team prepared' is the wordplay.
'soviet' becomes 'red' (I can't justify this - if you can you should give a lot more credence to this answer).
'prepared' is an anagram indicator.
'team' anagrammed gives 'meat'.
'red'+'meat'='RED MEAT'
Can you help me to learn more?
(Other definitions for red meat that I've seen before include "Beef e.g." , "Beef is one" , "Lamb perhaps" , "Soak up" , "Beef, venison or lamb, for example" .)