Gluten Free Pretzel Dogs

all-purpose gluten-free flour, plus more for sprinkling

xanthan gum (omit if your blend already contains it)

Scant 1/2 cup (43g) cultured buttermilk blend powder (I use Saco brand) (you can substitute 1/3 cup (43g) whey powder or the same amount dry milk powder by weight)

instant yeast

cream of tartar

baking soda

packed light brown sugar

kosher salt

apple cider vinegar

unsalted butter, at room temperature

egg whites (60 g), at room temperature

warm water (about 95°F)

gluten free all beef hot dogs, blotted dry*

Baking soda bath for boiling (6 cups water + 1 tablespoon baking soda + 1 teaspoon salt)

Egg wash (1 egg + 1 tablespoon heavy whipping cream, beaten)

*Be sure to blot the hot dogs dry quite well. Otherwise, the pretzel dough will slip right off the dogs after it is coiled around them.