Puffy Hong Kong egg waffles with a crispy shell and soft, eggy interior are a beloved street food. A fun family treat with fresh, sweet flavor.
In a medium bowl, sift together the flour, baking powder, and cornstarch for a smooth batter base.
In a separate large bowl, whisk eggs with sugar until pale and creamy. Stir in vanilla extract, milk, water, and salt until combined.
Gradually add the dry ingredients to the wet mixture, whisking gently to avoid lumps. Stir in the vegetable oil until batter is glossy.
Preheat an egg waffle pan on medium heat. Lightly grease both sides with a small amount of oil to prevent sticking.
Pour a scant cup of batter into the heated waffle pan, close tightly, and cook over medium-low heat for 2–3 minutes per side, flipping once for even puffiness and crispness. Release gently and cool briefly before serving.