Definition: In this task, you have to generate the title of the recipe given its required ingredients and directions.
Input: ingredients:  '6 egg yolks', '1 tablespoon orange zest', '1/2 cup orange juice', '1 cup sugar', '1/4 teaspoon salt', '1 1/3 cups flour', '6 egg whites', '1 teaspoon cream of tartar', '1/2 cup sugar',<sep> directions: 'Pre-heat the oven to 325°.', 'Beat the egg yolks until very thick and light-colored.', 'Add the orange peel and the juice and continue to beat until very thick.', 'Beat in 1 cup of sugar and the salt.', 'Gently fold in the flour.', 'In a separate bowl, beat the egg whites and cream of tartar until they reach the soft-peak stage.', 'Gradually add the remaining 1/2 cup of sugar.', 'Gently fold the egg whites into the egg yolk mixture.', 'Spoon into ungreased 10-inch tube pan.', 'Bake 55 minutes, or till done.', 'Invert pan to cool.'

Orange Sponge Tube Cake