INGREDIENTS
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28 ounces all-purpose flour (see note)
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1 tablespoon baking powder
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1 1/2 teaspoons baking soda
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1 tablespoon kosher salt
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1 ounce sugar
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10 ounces semi-instant pancake mix (above)
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2 large eggs, separated and at room temperature
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2 cups low-fat buttermilk at room temperature (plus another ounce to adjust consistency of final batter)
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2 ounces unsalted butter, melted in a small saucepan and cooled
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1 ounce unsalted butter, shortening or non-stick spray for the pan
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8 ounces fresh fruit such as blueberries (optional)