| • | Preheat an oven to 375°F.
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| • | Line two baking sheets with parchment paper.
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| • | Sift the flour, cornstarch, and salt into a medium bowl.
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| • | Whist the beaten eggs, sugar, and orange zest in a bowl until very thick.
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| • | Transfer to a large bowl and add the contents of the medium bowl. Mix together.
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| • | Put a small walnut-size ball of batter on a lightly greased cookie sheet.
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| • | Press until very flat and thin. Sprinkle with the sugar crystals.
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| • | Bake for 8-10 minutes, or until just golden.
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| • | Cool the cookies on the cookie sheets for 5 minutes.
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| • | Transfer to racks and let cool completely. |
