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["Butter and flour generously, a metal tube pan or bundt ring pan. Preheat oven to 350 degrees fahrenheit.", "Place melted butter aside until needed. In a medium deep bowl, whisk together the flour, salt and baking powder. Add both the zest of the lemons and the orange to the flour mixture.", "In your stand mixer bowl, beat the egg whites until they form very stiff peaks that stay in place. Remove the whites to another bowl, in the stand mixer bowl, beat the yolks and sugar until well blended.", "Add in about half of the flour mixture and blend. Add in the melted butter and beat for about a minute or two. Mix in 1/2 of the milk and vanilla until well blended. Add in the remaining flour and the milk and allow to mix until done.", "Remove the mixer bowl from its stand and gently and slowly fold in some of the whipped egg whites, being careful not to over mix here. Continue adding the whites in segments until all the whites become incorporated into the final mixture.", "Pour the finished batter into the prepared ring pan; decorate the top with the granular sugar if desired and place in the preheated oven. Bake for 40 to 45 minutes until the torta is light golden brown and an inserted toothpick comes out clean.