Let ingredients come to room temperature for at least 20 minutes.

Preheat oven to 325° F. Grease and flour a 10-inch tube pan.

In a large bowl, beat butter with a mixer at medium speed until creamy, about 2 minutes. Gradually add sugar, and beat until fluffy, about 5 minutes. Add eggs, one at a time, beating just until combined after each addition.

In a large bowl, whisk together flour, nutmeg, and salt. Gradually add flour mixture to butter mixture alternately with milk, beginning and ending with flour mixture, beating just until combined after each addition. Stir in zest and vanilla. Spoon batter into prepared pan.

Bake until a wooden pick inserted near center comes out clean, 1 hour to 1 hour and 15 minutes. Let cool in pan for 15 minutes. Remove from pan, and let cool completely on a wire rack. Spoon Bourbon Glaze over cake.