4 small lemons, organic if you can find them (Note: Avoid the giant lemons! Smaller lemons tend to pack more flavor, contain less water, and are cheaper too!)
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3 cups cake flour
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1 cup (2 sticks) unsalted butter, that is completely softened*
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3 cups superfine, Baker’s or caster sugar*
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6 eggs, warmed for 10 minutes in hot tap water before using