Preparation In large bowl of a standing electric mixer beat together butter, sugar, and salt until light and fluffy. Beat in yolks, 1 at a time, and vanilla and beat until smooth. Beat in flour gradually, beating dough until just combined well.
Preparation In large bowl of a standing electric mixer beat together butter, sugar, and salt until light and fluffy. Beat in yolks, 1 at a time, and vanilla and beat until smooth. Beat in flour gradually, beating dough until just combined well.