Instructions: 1. Sift flour with cocoa, and set aside.

2. In bowl of an electric standing mixer with paddle attachment, beat butter and sugar on medium, until well combined, about 2 minutes. Beat in egg whites, one at a time, beating for 4 minutes after each addition. Add the flour-and-cocoa mixture, and mix until just combined.

3. Reserve 1/2 cup batter; place in a pastry bag fitted with an #2 tip, and set aside for piping white tuile cookies.

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