Make the batter

• Whisk the flour, cornstarch and salt with the water until smooth.
• Stir in the beaten egg and egg white until fully combined.

Cook the crepe

• Heat a lightly sprayed frying pan over medium heat.
• Pour in the batter and swirl to coat the pan in a thin even layer.
• Cook until the edges set and the base is golden.

Add the egg

• Pour the remaining beaten egg over the crepe and spread it evenly.
• Scatter over the chopped spring onion.
• Flip and cook until the egg is just set.

Finish and serve

• Slide the crepe onto a plate, egg side up.
• Drizzle with soy sauce and sriracha.
• Roll or fold and serve hot.