Easy Homemade Soft Pretzels

and 1/2 cups (360ml) warm water (lukewarm-- no need to take temperature)

packet active dry or instant yeast (2 and 1/4 teaspoons)

salt

brown sugar

unsalted butter, melted and slightly cool

and ¾  - 4 cups (460-500g) all-purpose flour, plus more for work surface

coarse sea salt for sprinkling

baking soda

water