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1
Pulse together all ingredients except additional flour in a food processor until mixture just begins to form a ball.
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2
Knead dough on a work surface, incorporating additional flour as necessary, until smooth and elastic, about 8 minutes.
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3
Divide dough into 4 pieces and keep each wrapped in plastic wrap until ready to roll out.
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4
Set smooth rollers of a pasta machine at widest setting.
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5
Flatten 1 piece of dough into a rectangle and feed through rollers.
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6
Fold in half and feed through rollers 8 or 9 more times to continue kneading, folding in half each time and dusting with flour as necessary to prevent sticking.
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7
Turn dial to next narrower setting and feed dough through rollers without folding.
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8
Continue to feed dough through, without folding, making space between rollers narrower each time until narrowest setting is reached.
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9
Halve sheet crosswise and arrange on a dry kitchen towel, letting pasta hang over edge of work surface.
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10
Roll out remaining dough in same manner.
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11
Attach ribbon-pasta cutters to pasta machine and attach handle to 1/8-inch-wide cutter.
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12
Line a tray with a dry kitchen towel.
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13
Feed first rolled-out pasta sheet, which will have dried slightly but should still be flexible, through cutter and toss with some flour.
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14
Form pasta loosely into a nest and arrange on kitchen-towellined tray.
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15
Make more taglierini with remaining dough.
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16
Cover taglierini with plastic wrap until ready to use.