1. Preheat the oven to 425°F (220°C).

2. In a large bowl, dissolve the yeast in warm water and let it stand for 5 minutes.

3. Add the flour, salt, and sugar to the yeast mixture and knead until a smooth dough forms.

4. Divide the dough into equal portions and roll each portion into a long rope. Shape the ropes into pretzel knots.

5. Boil water with baking soda and dip each pretzel into the boiling water for 30 seconds, then place them on a baking sheet.

6. Brush the pretzels with beaten egg and sprinkle salt on top. Bake in the preheated oven for 12-15 minutes or until golden brown.