Grease and flour a tube pan or bundt pan. Preheat oven to 325 degrees F
In a separate bowl whisk the cake flour, salt, and baking powder for 30 seconds to combine. Set aside for later.
Cream the softened butter with the paddle attachment in your mixer on medium speed until smooth. Gradually add the sugar and mix until lightened in color and fluffy 3 to 5 minutes.
Add the eggs one at a time, mixing after each until the yellow of the yolk blends in.
Add the buttermilk, orange juice, orange extract, orange zest, and vanilla extract into a measuring cup or bowl. The buttermilk may become more thick when the orange juice is added.
With the mixer on low speed, add the flour mixture alternately with the buttermilk mixture. Begin and end with the dry ingredients. We do three additions of the flour mixture and two of the buttermilk mixture. Mix just until blended.
Scoop/spoon the batter into a prepared tube pan. Use the back of a spoon to smooth over the top to level.
Bake at 325 degrees F for 60-70 minutes or until a toothpick comes out clean (or with just a few crumbs attached.) Baking times can vary and so peek in as it approaches the 1 hour mark. If the top of the cake begins to get too dark, cover loosely with a piece of aluminum foil.
This recipe makes approximately 8 cups of batter.
Allow to cool in the pan for about 10 minutes before turning out onto serving plate.