Cheesy Rosemary and Parmesan Soft Pretzels

Ingredients:

1 1/2 cups warm water (110°F/45°C)
1 packet active dry yeast (2 1/4 teaspoons)
1 tablespoon granulated sugar
4 cups all-purpose flour
1 teaspoon salt
1/4 cup unsalted butter, melted
1 cup shredded mozzarella cheese
1/4 cup grated Parmesan cheese
1 tablespoon fresh rosemary, chopped
10 cups water
2/3 cup baking soda
1 large egg yolk, beaten with 1 tablespoon water
Coarse sea salt, for sprinkling
Directions:
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