Step 1: Make the Dough

• Using a stand mixer: Add the flour, baking powder, baking soda (if using), salt, the egg-water mixture, and oil into the bowl. Mix on low speed for about 8 minutes until the dough becomes smooth and elastic.
• Manually: Use a spatula to combine all the ingredients into a rough-looking dough. Cover and let it rest for 15 minutes. Then, knead the dough by folding it from the edges towards the center until it becomes smooth and soft (it should not be sticky).

Step 2: Rest the Dough

• Divide the dough into two equal portions and shape them into smooth balls.
• Coat each ball lightly with oil, cover with cling film, and let them rest at room temperature for 2-4 hours. Alternatively, refrigerate overnight and bring it to room temperature for at least 1 hour before use.

Step 3: Shape the Dough

• On a lightly floured surface, flatten each dough ball into a rectangle (approx. 10×25 cm / 4×10 inches). Avoid kneading the dough again as this can affect the texture.
• Cut each rectangle into 10 strips and stack two strips together. Press them gently in the center using a chopstick lengthwise to adhere them.

Step 4: Fry the Youtiao

• Heat oil in a deep pan to 190°C/374°F.
• Stretch each dough stick gently and lower it into the oil carefully.
• Fry until they expand and become golden brown, rolling them continuously to ensure even cooking.
• Place on a plate lined with paper towels to drain excess oil.

Step 5: Serve and Enjoy

• Serve warm with a bowl of congee or soy milk for a classic Chinese breakfast experience.