Inga and Alvin set off to explore their favorite street foods, one of which is the famous Hong Kong egg bubble waffle. Join them on their journey to discover how it's made and re-create it for viewers at home.

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Egg Waffle Machines:
ALDKitchen Bubble Waffle Maker: https://amzn.to/2EB0Bmu
Hong Kong Egg Waffle Maker: https://amzn.to/35LACoy

Hong Kong-Style Egg Waffle Recipe
Makes 3-4 waffles

INGREDIENTS
1 cup plus 2 tablespoons (140 grams) all-purpose flour
2 teaspoons (8 grams) baking powder
1 tablespoon custard powder
3 tablespoons plus 1½ teaspoons (28 grams) tapioca starch 2 large eggs
½ cup plus 3 tablespoons (140 grams) sugar
½ cup plus 2 tablespoons (140 milliliters) water
1 tablespoon plus 2¼ teaspoons (28 grams) evaporated milk
1 teaspoon vanilla extract
2 tablespoons (28 grams) vegetable oil
Oil, for greasing waffle machine

PREPARATION
In a medium bowl, sift together the flour, baking powder, custard powder, and tapioca starch. Set aside.
Set up a double boiler over medium heat. Add the eggs and sugar to the top bowl, whisking vigorously until the sugar is dissolved and the mixture has thickened slightly, about 5 minutes.
Add the water and evaporated milk to the egg mixture and stir to combine.
Slowly add the dry ingredients to egg mixture and mix until well combined.
Stir in the...