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Preheat oven to 350 degrees, and prep your bundt pan
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Beat together butter and sugar until fluffy
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Add the egg yolks, sour cream, and extracts
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Mix together the flours and salt. Mix together the orange zest, lemon zest, and orange juice.
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Add the flour mixture and juice mixture alternately, and mix until combined
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Beat the egg whites until soft peaks form
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Gently fold the egg whites into the batter until incorporated
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Pour into your prepared bundt pan and smooth out. Bake at 350 degrees for 38-45 minutes, or until a cake tester comes out clean