Preheat oven to 350*. Grease and flour Bundt pan, then spray with nonstick spray with flour in it. Set aside.

In bowl, mix eggs, yolk, buttermilk, oil & vanilla until combined.

Sift together all dry ingredients, add slowly to bowl on low speed, pour in hot water while slowly mixing. Once water is completely combined, continue to mix on low for 1 minute.

Pour cake batter into prepared pan & bake 45-55 minutes or until toothpick inserted comes out clean.

Remove from oven. Let cool 10 minutes inpan. The place on rack to finish cooling, invert from pan cool completely.