Mix warm water, yeast, and sugar in a bowl.

Let the mixture stand for 5 minutes to activate the yeast.

In a separate bowl, place the flour and salt.

Add the yeast mixture to the flour mixture and stir until a dough forms.

Knead the dough until smooth.

Shape the dough into a pretzel shape.

Beat the egg and brush it evenly over the top of the pretzel.

Bake in a preheated oven at 425°F (220°C) for 12 minutes, or until golden brown.