Biscotti

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Italian.

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Borrowed from Italian biscotti, plural of biscotto(“cookie, biscuit”); doublet of biscuit.

etymonline

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biscotti (n.)

1990s, from Italian biscotti, plural of biscotto, from Medieval Latin biscoctum, literally "twice-baked," from Latin (panis) bis coctus "(bread) twice-baked;" see bis- + cook (v.). Compare biscuit.