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 Posted By: pinklife 
Jan 16  # 1 of 3
A preparation technique of splitting an item down the center, nearly completely through, so the halves can be opened and laid flat, looking like a butterfly (though a meaty, dead one.)
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 Posted By: ButtrflyDreams 
Jan 19  # 2 of 3
I think I already knew that. I guess I just never think of the term while I'm slicing something down the middle. Thanks for posting the definition. :)
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 Posted By: pinkperson 
Feb 1  # 3 of 3
This is a new word for me. I have heard this word from a chef in a cooking program. But I never knew that it that it simply meant splitting. A new addition to my cooking word bank.