Crossword Genius

Tree whose fruit is called St John's Bread (5)

Ross

I believe the answer is:

carob

(Other definitions for carob that I've seen before include "Chocolate substitute pod" , "Saint John's bread" , "Bean, a choc. substitute" , "(Seeds yielding) powder used as a chocolate substitute" , "Tree yielding chocolate substitute" .)

I've seen this clue in The Independent.
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