Margarita Tres Leches Cake

Directions

1. Place egg whites in a large bowl; let stand at room temperature for 30 minutes. Grease and flour a 13x9-in. baking pan; set aside. Preheat oven to 375°.
2. Beat sugar, tequila, butter, yolks, 3 tablespoons lime juice and vanilla until well blended. Combine flour, baking soda and salt; gradually beat into yolk mixture until blended.
3. Add confectioners' sugar and cream of tarter to egg whites; beat with clean beaters until stiff peaks form. Fold into batter. Transfer to prepared pan.
4. Bake until a toothpick inserted in the center comes out clean, 18-20 minutes. Place pan on a wire rack. With a wooden skewer, poke holes in cake about 1/2 in. apart.
5. Beat condensed milk, 2% milk, evaporated milk, whipping cream and remaining lime juice until blended. Drizzle over cake; let stand for 30 minutes. Refrigerate for 2 hours before serving.
6. Cut cake into squares. If desired, garnish with whipped cream, and lime slices and zest.