01 -  Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper and lightly grease. 
 02 -  In a large mixing bowl, whisk together all-purpose flour, baking powder, baking soda, and fine sea salt. 
 03 -  Cut cold cubed butter into the flour mixture using a pastry cutter or fork until mixture forms coarse crumbs. 
 04 -  Pour cold cream soda over dry mixture and gently stir until a shaggy dough forms, ensuring not to overmix. 
 05 -  Transfer dough onto a lightly floured work surface. Pat gently and fold over itself two to three times to create flaky layers. 
 06 -  Roll dough into a rectangle approximately 1/2-inch thick. Slice evenly into 8 strips. Twist each strip gently and thread onto wooden or metal skewers in a spiral or zigzag pattern. 
 07 -  In a medium saucepan, bring 4 cups water and 1/4 cup baking soda to a simmer, but not a full boil. 
 08 -  Immerse each skewered biscuit strip in the simmering baking soda solution for 10 seconds, then transfer to prepared baking sheet. 
 09 -  Brush each skewer with beaten egg and sprinkle with coarse pretzel salt. 
 10 -  Place baking sheet in oven and bake for 15 to 18 minutes, until skewers are golden brown and puffed. 
 11 -  While still warm, brush baked skewers with melted unsalted butter. Mix granulated sugar and vanilla extract, then sprinkle evenly over each. 
 12 -  Serve skewers warm or at room temperature for optimal flavor and texture.