Preheat your oven to 350° ℉
Butter and flour, very well, a 9" x 3"tube pan.
In the bowl of a stand mixer, or using a large bowl with a hand mixer, place the sugar and lemon zest and beat for 30-40 seconds on low, or you can massage the lemon zest into the sugar with your finger tips.
Add the eggs, egg yolks and salt to the bowl with the sugar and zest and beat 4-5 minutes on high speed with the whisk attachment. The mixture should be light in color and tripled in volume.
Add the vegetable oil or Strippaggo Lemon Extra Virgin Olive OIl and whisk on medium speed until incorporated.
Whisk together the flour and the baking powder.
Sift half the dry ingredients into the bowl and beat on low speed just until the flour is incorporated.
Add the milk and continue to whisk on low speed until incorporated.
Sift in th remaining flour and whisk until combined.
Pour the batter into the prepared pan and bake for 30-32 minutes or until a skewer inserted in the center comes out clean.
Let cool in the pan for about 10 minutes.
Remove from the pan and place on a rack to cool completely
Dust with powdered sugar and enjoy.