LEMON CHIFFON CAKE

INGREDIENTS
7 large eggs, separated, room temperature
2 cups all-purpose flour
1-1/2 cups sugar
3 teaspoons baking powder
1 teaspoon salt
3/4 cup water
1/2 cup canola oil
4 teaspoons grated lemon zest
2 teaspoons vanilla extract
1/2 teaspoon cream of tartar
FROSTING:
1/3 cup butter, softened
3 cups confectioners’ sugar
4-1/2 teaspoons grated lemon zest
1/4 cup lemon juice
Dash salt

DIRECTIONS
Preheat oven to 325°.
Sift flour, sugar, baking powder and salt together twice; place in another large bowl. In a small bowl, whisk egg yolks, water, oil, lemon zest and vanilla until smooth. Add to flour mixture; beat until well blended.
Add cream of tartar to egg whites; with clean beaters, beat on medium speed just until stiff but not dry. Fold a fourth of the whites into batter, then fold in remaining whites.
Gently spoon batter into an ungreased 10-in. tube pan. Cut through batter with a knife to remove air pockets. Bake on lowest oven rack 50-55 minutes or until top springs back when lightly touched. Immediately invert pan; cool completely in pan, about 1 hour.
Run a knife around sides and center tube of pan. Remove cake to a serving plate.
In a small bowl, combine frosting ingredients; beat until smooth. Spread over cake.