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1
Sponge Cake Layer.
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2
Preheat oven to 350 degrees and generously butter a 9-inch springform pan.
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3
Sift cake flour, baking powder, together in a medium-sized bowl and set aside.
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4
Beat egg yolks together in a large bowl with an electric mixer on high for 3 minutes.
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5
Then, with mixer still running, gradually add sugar continue beating until thick and light-yellow about 5 minutes longer.
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6
Beat in vanilla and lemon extracts.
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7
Sift flour mixture over batter and gently stir it in by hand then blend in butter.
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8
In a clean bowl, using clean, dry beaters, beat egg whites and cream of tartar together on high until frothy.
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9
Gradually add sugar and continue beating until stiff peaks form.
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10
The whites should stand up in stiff peaks, but not be dry.
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11
Stir about 1/3 cup of whites into the batter, then gently fold in remaining whites.
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12
Gently spoon batter into the pan.
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13
Bake cake just until center of the cake springs back when lightly touched, only about 10 minutes.
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14
Let cake cool in pan on a wire rack while making cheesecake filling.
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15
Do not remove from pan.
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16
CHEESE CAKE.
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17
Preheat oven 300 degrees F.
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18
In large mixer bowl beat cheese until fluffy.
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19
Gradually beat in condensed milk until smooth.
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20
Add eggs one at a time and lemon juice.
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21
Evenly pour cheese filling on top of baked sponge cake.
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22
Bake 50-55 minutes, until center is set.
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23
Remove from oven; turn oven to 500 degrees F.
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24
Mix sour cream, sugar and vanilla well; spread evenly over top of cheese cake; return to oven bake 5 min.
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25
Remove from oven, cool, chill for several hours; best over night.
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26
LEMON SAUCE.
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27
Combine cornstarch and sugar in a small saucepan.
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28
Slowly stir boiling water into the sugar mixture.
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29
Cook over low heat, stirring constantly, until the sauce is smooth and thickened.
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30
Cover and cook over very low heat or over boiling water in a double boiler, stirring occasionally, until no raw starch taste remains, about 5 to 7 minutes.
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31
Remove from heat and stir in lemon rind and juice.
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32
Cool.
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33
When ready to serve cheese cake drizzle over servings.