Aid for the back burner? (4)

I believe the answer is:

aloe

(Other definitions for aloe that I've seen before include "Fleshy-leaved plant" , "O, ale with bitter plant" , "Succulent plant (4) 5532" , "Flower, maybe vera" , ". . . . vera, soothing plant" .)

I've seen this clue in The Wall Street Journal.

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