INGREDIENTS
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6 cups (1 pound 9.50 ounces) all-purpose flour
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2 tablespoons (14 grams) instant yeast
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1 teaspoon kosher salt
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1/2 cup (3.50 ounces) granulated sugar
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1/2 cup (4.00 ounces) unsalted butter or shortening, room temperature (see author’s note above!)
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1 cup (about 1 large Russet potato) freshly mashed potatoes (meaning boil the potatoes, steam to dry, then mash)
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1 cup (8.00 ounces) warm water (95 to 100° F)
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2 (about 4.25 ounces) large eggs
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1/2 cup (4.00 ounces) unsalted butter, melted for brushing