Southeast Asia starch source (4)

I believe the answer is:

sago

(Other definitions for sago that I've seen before include "Edible powdery starch" , "Powdery starch from a palm" , "Starchy foodstuff" , "Starchy cereal used in puddings" , "Powdery starch used in cooking" .)

I've seen this clue in the Newsday.

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