Bloom the yeast: Whisk the yeast into the milk and sugar. Cover with plastic wrap and let the yeast activate for at least 10 minutes or until foamy and fragrant.
7 grams active-dry yeast, 150 grams whole milk, 25 grams brown sugar
Make the dough: Whisk the sourdough discard into the yeast mixture.
75 grams sourdough discard
Combine the dry ingredients and yeast mixture in the bowl of stand mixer fitted with a bread hook. Mix until a cohesive dough forms.
240 grams bread flour, 4 grams salt
With the mixer running, add the butter and continue kneading until fully absorbed and the dough looks smooth and cohesive, about 5 to 10 minutes.
14 grams unsalted butter
Pre-shape the dough: Divide the dough into 6 even portions. Round the each piece of dough into a tight ball. Transfer to a plate and cover with plastic wrap.
Let the dough rest for 15 minutes. This will make the dough much easier to roll out.
Prep: Preheat the oven to 425 F. Line a baking sheet with parchment paper.
Shape: Working with one portion at a time. Roll each into an 12-inch rope. Divide the rope into 6 even segments.
Transfer the dough on small parchment-lined baking sheet or plate. Freeze the dough for 15 minutes.
Baking soda bath: Dissolve the baking soda in hot, boiling water.
452 grams hot water, 10 grams baking soda
Drop a few hand fulls of dough into the baking soda bath. Dip for 1 minute, then fish them out and transfer them to a wire rack to drain.
Arrange the dough on a baking sheet with at least an inch of space to allow them to puff up.
Bake: Bake for 10 to 15 minutes.
Make the garlic butter: In a large mixing bowl, rehydrate the garlic powder in water. This allows the flavor to fully develop.
14 grams water, 10 grams garlic powder
Melt the butter in a small saucepan over medium heat. Pour the hot butter into the garlic mixture and stir until fully combined.
113 grams unsalted butter
Top the pretzel bites: Toss the baked pretzel bites in the garlic butter until every piece is completely coated. Return the pretzels to the baking sheet. Sprinkle an even layer of Parmigiano Reggiano over the pretzel bites.
7 grams Parmigiano Reggiano
Return the pretzel bites to the oven and bake for another 5 minutes.
Store: Store leftover pretzel bites in an airtight container at room temperature for up to 3 days.