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1
Separate the yolks and the whites of the 5 eggs.
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2
Set aside.
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3
Sift together flour, sugar, baking powder and salt in a bowl.
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4
Add in the yolks, oil and orange juice.
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5
Mix until smooth.
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6
Add in the zest and continue mixing.
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7
Set aside.
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8
Beat the egg whites and add the cream of tartar.
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9
Beat at medium-high speed until stiff peaks are formed.
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10
Gradually fold beaten whites with tartar into the batter.
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11
Preheat oven to 350F and grease the bundt pan with butter and sprinkle some flour.
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12
Pour the batter into the pan and bake for 20 minutes or until a toothpick inserted comes out clean.
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13
While baking the cake, beat the softened margarine at medium speed with a mixer until creamy.
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14
Alternately add in the sugar, orange and lemon juices.
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15
You may opt to add more orange juice one tablespoon at a time until you reach desired consistency.
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16
Once baked, let the cake cool for about 10-15 minutes.
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17
This is important.
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18
If the cake is still hot when you spread the frosting, the latter will melt so let the cake cool.
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19
Slice the 'cake top' (the curved top of the cake) so you can get a nice flat top then I sliced the cake into halves so i can put frosting in between the layers.
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20
Cover the filled cake with the frosting and design however you want.
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21
I liked mine chilled so i left it in the fridge for an hour or so.
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22
Serve and enjoy!