Starchy cereal from an Asian palm tree, which is used for puddings (4)

I believe the answer is:

sago

(Other definitions for sago that I've seen before include "Powdery starchy food" , "dessert?" , "Cereal, used in pudding" , "Starchy food as white pudding" , "Powdery starch from a palm" .)

I've seen this clue in The Mirror.

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