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["In a small saucepan, add milk, 1 cup water, sugar, butter and salt.", "Heat over low just until the butter melts - cool to lukewarm.", "In a medium bowl, whisk together 3 cups flour with the yeast.", "Pour the milk mixture into a large mixing bowl.", "Mix in the flour/yeast mixture, 1 cup at a time, until all 3 cups are in, beating until smooth.", "Stir in enough of the remaining flour to make stiff dough.", "Scoop the dough onto a lightly floured surface.", "Knead until smooth and elastic (about 8-10 minutes), adding enough of the remaining flour to prevent the dough from sticking to your hands.", "Move dough into a large bowl lightly coated with cooking spray.", "Cover and let rise until doubled, about 60 minutes.", "Uncover and punch down the dough.", "Evenly divide into 12-16 pieces, depending on how large you want the buns to be.", "Form each piece into a tight ball and place about 2"" apart on a parchment lined baking sheet - you may need to use 2 sheets depending on the size.", "Slightly flatten each ball.", "Cover and let rise until doubled - another 30 to 45 minutes.", "Preheat oven to 400.", "In a small bowl, whisk together egg yolk and water.", "Gently brush egg wash over each bun.", "Bake about 20-25 minutes, until golden and they sound hollow when tapped on the bottom.", "Transfer to a wire rack and cool completely."]