Homer's expression involves prelude to Ulysses, good and ready (5)

I believe the answer is:

dough

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But I can't explain it at all! Could you help me understand?

(Other definitions for dough that I've seen before include "Bready mix" , "Money (sl.)" , "cash" , "Uncooked bread - money" , "Moistened flour" .)

I've seen this clue in The Guardian.

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