The most common and most likely answer to this crossword clue is the 4 letter word RAGI
R
A
G
I
More clues leading to the result RAGI
Buddy explains!
The straight part
We know that "Not the ultimate in Indian grain supply" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case not the ultimate in indian grain supply = ragi.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RAGI mean?
RAGI noun- A type of grain, Eleusine coracana, cultivated as a cereal in arid areas of Africa and Asia; finger millet.
- A type of yeast traditionally used in winemaking, baking, and brewing, now identified as Saccharomyces cerevisiae.