French Pistachio Buttercreams

French Pistachio Buttercreams
Ingredients
•    1-1/2  cups all-purpose flour
•    1/2  teaspoon salt
•    3/4  cup unsalted butter, softened
•    1/2  cup sifted powdered sugar
•    1  egg
•      Granulated sugar
•    1/2  cup sifted powdered sugar
•    1/4  cup unsalted butter, softened
•    1  teaspoon rum, cognac, or milk
•    6  ounces semisweet chocolate pieces or white baking pieces, melted
•    1/2  cup pistachio nuts, chopped

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