Preheat the oven to 350°F and position the rack in the center.

Prepare your cake pan by brushing with olive oil, lining with parchment, and dusting with flour.

Whisk together flour, kosher salt, baking powder, and baking soda in a medium bowl.

In a large bowl, combine granulated sugar, cardamom, and eggs; beat until thick and fluffy, about 5 minutes. Slowly drizzle in olive oil while mixing.

Add half of the orange zest, fresh orange juice, and milk to the egg mixture; beat until smooth.

Mix in the dry flour mixture until a uniform batter forms with no dry streaks.

Pour the batter into the prepared pan, sprinkle the top with remaining granulated sugar, and bake for 40-45 minutes or until a skewer comes out clean.

Cool the cake in the pan for 30 minutes before inverting onto a plate to cool completely.

Dust the cooled cake with sifted confectioners' sugar and sprinkle with fresh orange zest before serving.