# Ingredient List:
→ Dough
01 - 2 cups plus 2 tablespoons bread flour
02 - 1/4 cup granulated sugar
03 - 2 teaspoons fine sea salt
04 - 1 cup whole milk, cold
05 - 1/2 cup active sourdough starter at 100% hydration
06 - 2 tablespoons unsalted butter, softened
→ Butter Block
07 - 1 cup plus 1 tablespoon unsalted butter, cold
→ Egg Wash
08 - 1 large egg
09 - 1 tablespoon whole milk
# Directions:
01 - In a large bowl, combine bread flour, granulated sugar, and fine sea salt. Add cold milk, sourdough starter, and softened butter. Mix until just combined, then knead for approximately 8 minutes until a smooth, elastic dough forms.
02 - Shape dough into a rectangle, wrap tightly in plastic wrap, and refrigerate for a minimum of 2 hours.
03 - Place 1 cup plus 1 tablespoon cold unsalted butter between two sheets of parchment paper. Pound and roll into a 8 by 6 inch rectangle. Chill until firm but still pliable.
04 - On a lightly floured surface, roll out dough to a 16 by 8 inch rectangle. Position butter block on one half, fold dough over to enclose, and press edges to seal.
05 - Rotate dough 90 degrees and roll into a 24 by 8 inch rectangle. Fold into thirds using a letter fold technique, wrap in plastic, and chill for 1 hour.
06 - Repeat the rolling and folding process two additional times, chilling for 1 hour between each turn. Ensure dough remains cold and butter remains evenly distributed.
07 - After the final fold, wrap dough and refrigerate overnight for 8 to 12 hours to develop flavor and facilitate final shaping.
08 - The following morning, roll chilled dough to a 24 by 12 inch rectangle, approximately 3/16 inch thick. Using a sharp knife, cut into 12 long triangles of equal size.
09 - Starting from the wide end of each triangle, roll tightly toward the point while gently stretching to create tension. Bend ends inward to form crescent shape. Arrange on parchment-lined baking sheets.
10 - Cover loosely with a kitchen towel and proof at room temperature until doubled in volume, approximately 2 to 3 hours.
11 - Heat oven to 400°F with racks positioned in the upper-middle section.
12 - Whisk together egg and milk until smooth. Lightly brush each croissant with egg wash to promote golden browning.
13 - Bake for 18 to 22 minutes until golden brown and crisp exterior forms. Allow slight cooling before serving to maintain structural integrity.