In a large bowl, combine flour, yeast, salt, water and butter; beat until smooth (mixture will be slightly sticky). Sprinkle with 1-2 tablespoons water if dough is dry. Cover and let rest in a warm place 30 minutes.
Punch dough down. Turn onto a lightly greased surface; divide into six pieces. Roll each piece into a 24-in. rope. For topping, combine water, sugar and baking soda in a shallow bowl. Shape each rope into a pretzel and dip into the baking solution. Sprinkle pretzels with coarse salt or coarse sugar.
Place on parchment-lined baking sheets. Bake at 400° for 12-15 minutes or until golden brown. Brush with melted butter. Dip in cinnamon-sugar, if desired. Serve warm.
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