爷爷奶奶贺信: 日月如梭，今天又迎来了你的生日。在此我们深深地祝福你：生日快乐！天天快乐！永远快乐！       
                      生活幸福又美满，
                      日夜操劳心里甜。
                      快乐健康春常在，
                      乐享天伦暖心间！

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在乐爸生日来临之前，我决定学习做生日蛋糕。因为下面两三个月里，家里其它四个人都要过生日。美国人做的蛋糕，一般是一半面一半糖的比例，蛋糕上面的装饰几乎全是糖，吃一口还行，全吃了有点受罪。中国店的生日蛋糕好吃，我一个人能吃掉一大个，可是怀疑反式脂肪很多。研究了半个小时，我决定做戚风蛋糕。周日上午购买了材料，中午做好，放在冰箱里冷藏一下，然后晚上吹蜡烛，吃蛋糕。蛋糕样子有点丑，贴在这里做个纪念吧，下次争取把字写得好看一些。至于味道，姥姥姥爷不爱吃甜点心，乐爸说挺好吃，乐乐只吃最甜的部分，我嘴疼，勉强吃了一点，我叹了口气，觉得自己再努力也就是个二流厨师。方子参考下面的 (糖的用量减掉一大半)。

http://allrecipes.com/Recipe/chocolate-chiffon-cake/detail.aspx

Ingredients
1/2 cup baking cocoa
3/4 cup boiling water
1 3/4 cups cake flour
1 3/4 cups sugar
1 1/2 teaspoons baking soda
1 teaspoon salt
1/2 cup vegetable oil
7 eggs, separated
2 teaspoons vanilla extract
1/4 teaspoon cream of tartar

ICING:
1/3 cup butter or margarine
2 cups confectioners' sugar
2 (1 ounce) squares unsweetened chocolate, melted and cooled
1 1/2 teaspoons vanilla extract
3 tablespoons hot water
Chopped nuts

Directions
In a bowl, combine cocoa and water until smooth; cool for 20 minutes. In a mixing bowl, combine flour, sugar, baking soda and salt. Add oil, egg yolks, vanilla and cocoa mixture; beat until smooth. In another mixing bowl, beat egg whites and cream of tartar until stiff peaks form; gradually fold into egg yolk mixture. Pour into an ungreased 10-in. tube pan. Bake on lowest rack at 325 degrees F for 60-65 minutes or until cake springs back when touched. Invert pan to cool; remove cake from pan.
For icing, melt butter in medium saucepan. Remove from heat; stir in sugar, chocolate and vanilla. Stir in enough water until desired consistency; drizzle over cake. Sprinkle with nuts.