Preheat oven to 375F. Butter and flour 9-inch-diameter cake pan with 1 1/2-inch-high sides. Line bottom of pan with waxed paper. Finely grind almonds with 2 tablespoons sugar in processor. Combine yolks, 2 tablespoons sugar, lemon peel, cinnamon and salt in medium bowl. Using electric mixer, beat until thick and smooth, about 2 minutes. Stir in almond mixture. Using clean beaters, beat egg whites in large bowl until soft peaks form. Gradually add 4 tablespoons sugar, beating until stiff but not dry. Fold large spoonful of whites into almond mixture. Gently fold in remaining whites.

Transfer batter to pan. Bake until tester inserted into center comes out clean, about 35 minutes. Cool in pan on rack. Turn out onto platter. Remove waxed paper.

Per serving: 652 Calories (kcal); 18g Total Fat; (24% calories from fat); 22g Protein; 103g Carbohydrate; 748mg Cholesterol; 356mg Sodium Food Exchanges: 0 Grain(Starch); 3 Lean Meat; 0 Vegetable; 0 Fruit; 2 Fat; 6 1/2 Other Carbohydrates