01 - Whisk together flour, baking powder, baking soda, salt, and sugar in a large bowl until thoroughly combined.
02 - Create a well in the center of the dry ingredients. Add the egg, water, and 2 tbsp vegetable oil. Mix with a spatula until a shaggy, sticky dough forms.
03 - Knead the dough in the bowl for 1-2 minutes until just combined. The dough will remain sticky.
04 - Cover the bowl with plastic wrap and let the dough rest at room temperature for 15 minutes.
05 - Lightly oil your hands and work surface. Knead the dough for 2-3 minutes until smooth and elastic.
06 - Return the dough to the bowl, cover, and let rest for 1 hour to develop gluten structure.
07 - Roll or press the dough on a lightly floured surface into a 1/2 inch thick rectangle. Cut into strips 1 inch wide and 5 inches long.
08 - Stack two strips together. Press a chopstick or knife back lengthwise down the center to fuse the pair, creating the traditional hollow center.
09 - Heat vegetable oil in a deep pot or fryer to 375°F.
10 - Gently stretch each dough pair to 8 inches. Carefully lower into hot oil, frying 2-3 at a time. Turn constantly with chopsticks for 2 minutes until puffed and golden brown.
11 - Remove finished sticks and drain on a wire rack or paper towels. Serve immediately while warm.