INGREDIENTS
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Ingredients:
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220g Butter (room temperature)
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170g Sugar
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3 Large eggs (about 210g) - separated
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1 tsp Vanilla extract
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180g Plain flour
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30g Corn flour
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5g Baking powder
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250g Green apple, peeled and cubed and mix with 1 1/2 tbsp lemon juice
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Lemon zest from 1 large lemon