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Flaky sourdough discard pie crust

Flaky Sourdough Discard Pie Crust

An all-butter pie crust that uses cold sourdough discard as most of its liquid, for one 9-inch pie.
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Prep Time 25 minutes
Cook Time 25 minutes
Chill Time 1 hour 20 minutes
Total Time 2 hours 10 minutes
Servings: 8 slices
Course: Dessert
Cuisine: American
Calories: 195
Ingredients Equipment Method Notes

Ingredients
  

  • 150 g (about 1¼ cups) all-purpose flour
  • 4 g (1 teaspoon) granulated sugar
  • 3 g (½ teaspoon) fine salt
  • 113 g (8 tablespoons) unsalted butter, very cold and cubed
  • 100 g (about ½ cup) sourdough discard, cold
  • 15 g (1 tablespoon) ice water

Equipment

  • Kitchen scale
  • Large mixing bowl
  • Pastry blender
  • Rolling Pin
  • 9-inch pie dish
  • Pie weights
  • Parchment paper

Method
 

  1. Whisk the flour, sugar and salt in a large bowl, chilling the bowl first if the kitchen is warm.
  2. Cut in the cold butter until the largest pieces are pea size, with some flat walnut-half pieces left.
  3. Stir the ice water into the cold discard, drizzle it over the flour and toss until shaggy, then press into a 1-inch disc and wrap.
  4. Refrigerate at least 1 hour, or up to 3 days.
  5. Roll into a 12-inch round about ⅛ inch thick, fit into a 9-inch pie dish, trim to 1 inch, fold under and crimp.
  6. Freeze 20 minutes, then line with parchment and weights and bake at 400°F (200°C) for 15 minutes. Remove the weights and bake 5 more minutes for partly baked, or 12 to 15 more minutes for fully baked.
  7. Fill the warm, partly baked crust for custard pies and bake at 350°F (175°C), or cool the fully baked crust completely for cream pies.

Notes

This recipe is Research-backed and has not been through a Bake-Keeper kitchen test yet. The ratio of butter and discard to flour follows well-tested discard crusts, scaled to the 9-inch dish used on the site's pumpkin pie.
Discard that has sat in the refrigerator for more than 2 weeks can taste sharp. For sweet pies, use discard that is a few days old. For a savory quiche, older discard is fine and the extra tang suits it.