1. Make the cake: Position a rack in the center of the oven and heat the oven to 350°F. Coat the bottom and sides of a 9-inch round cake pan with a removable bottom with nonstick baking spray. 2. Sift together the flour, ¾ cup of the sugar, and the salt into a medium bowl. 3. In the bowl of a stand mixer fitted with the whisk attachment (or in a large bowl, using a handheld mixer), whip the yolks and ¼ cup sugar on medium speed until thick and pale yellow, about 4 minutes.