INGREDIENTS
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1 1/2 cups (213g) all-purpose flour
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1/2 cup (70g) cornstarch
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1 tsp baking powder
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1/2 tsp baking soda
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1/2 tsp salt
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1 1/2 cups buttermilk
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1/2 cup milk
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6 Tbsp vegetable oil or canola oil
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1/2 tsp vanilla extract
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2 large eggs, whites and yolks separated
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3 Tbsp granulated sugar