In a large bowl, combine the flour, baking powder, baking soda, poppy seeds, and salt and set aside.
2 cup all purpose flour, 2 teaspoon baking powder, ½ teaspoon baking soda, ¼ teaspoon salt, 2 tablespoon poppyseeds
In a separate large bowl whisk the oil, butter, granulated sugar, eggs, sour cream, buttermilk, lemon juice, vanilla extract, and lemon zest. Pour the dry ingredients over the wet ingredients just until the flour mixture disappears. set aside and start prepping the syrup.
¼ cup oil, ¼ cup butter, 1 cup granulated sugar, 2 eggs, ½ cup sour cream, ⅓ cup buttermilk, 2 tablespoon lemon juice, 1 teaspoon vanilla extract, 2 tablespoon lemon zest