In a large mixing bowl, combine the warm milk, rapid rise yeast, and brown sugar. Whisk gently and let it sit for about 5 minutes until it becomes frothy.
Add the melted butter and salt to the yeast mixture. Gradually add the flour, one cup at a time, mixing with a wooden spoon or a dough hook until the dough begins to pull away from the sides of the bowl.
Turn the dough onto a floured surface and knead it for about 5-7 minutes until it’s smooth and elastic.
Place the kneaded dough in a greased bowl, cover it with a clean kitchen towel, and let it rise in a warm spot for about 30 minutes or until it has doubled in size.
Bring 8 cups of water to a boil in a large pot, then add the baking soda. Be cautious as it will bubble up!
Punch down the risen dough and divide it into 8 equal pieces. Roll each piece into a long rope and twist it into the classic pretzel shape.
Carefully drop each shaped pretzel into the boiling baking soda bath for about 30 seconds. Use a slotted spoon to remove them and place them on a parchment-lined baking sheet.
Before baking, sprinkle each pretzel generously with coarse sea salt.
Preheat your oven to 425°F (220°C) and bake the pretzels for 12-15 minutes, or until they are golden brown.
Let the pretzels cool slightly before enjoying them warm.