Japanese broth recipe's the last word (5)
I believe the answer is:
ramen
'japanese broth' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'recipe's the last word' is the wordplay.
'recipe' becomes 'r' (abbreviation in medical prescriptions).
'the last word' becomes 'amen' (last word in a prayer).
'r'+'amen'='RAMEN'
Can you help me to learn more?
(Other definitions for ramen that I've seen before include "Exotic dish" , "Quick-cooking noodles" , "soup" , "Oriental noodles" .)