Crossword Genius

What's often put on the fork is ostentatiously sumptuous (5)

Ross

I believe the answer is:

ritzy

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'sumptuous' is the definition.
(I've seen this in another clue)

I don't understand the remainder of the clue.

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(Other definitions for ritzy that I've seen before include "Ostentatiously rich" , "Ostentatiously stylish" , "Luxurious" , "Expensively stylish" , "Richly elegant" .)

I've seen this clue in the Sydney Morning Herald.
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