We wrote this recipe in the Joy of Cooking style. Every amount, time and step comes from the source's recipe card.
Thin, crisp crackers made from leftover sourdough starter.
Mix together to make a smooth (not sticky), cohesive dough:
1 cup (227g) sourdough starter, unfed/discard
1 cup (113g) King Arthur Golden Wheat Flour
1/2 teaspoon flaky sea salt
4 tablespoons (57g) unsalted butter, room temperature
2 tablespoons dried herbs, of your choice, optional
Divide the dough in half, and shape each half into a small rectangular slab. Cover with plastic wrap, and refrigerate until the dough is firm. That takes 30 minutes, or up to a couple of hours.
Preheat the oven to 350°F.
Working with one piece of dough at a time, very lightly flour a piece of parchment. Flour the rolling pin and the top of the dough too.
Place the dough onto the floured parchment and roll it about 1/16" thick. Ragged, uneven edges are fine. Roll it as evenly as possible.
Transfer the dough and parchment together onto a baking sheet. Lightly brush with:
Then sprinkle the salt over the top of the crackers:
coarse salt, (such as kosher or sea salt) for sprinkling on top
Cut the dough into 1 1/4" squares; a rolling pizza wheel works well here.
Prick (dock) each cracker a couple of times with a fork. This will help keep them from puffing up like little pitas as they bake.
Roll and cut the second piece of dough following the directions above.
Bake the crackers for 20 to 25 minutes, until they're starting to brown around the edges. Midway through, rotate the baking sheets both top to bottom and front to back. This will help the crackers brown evenly.
When fully browned, remove the crackers from the oven and place the pans on a rack to cool.
Store crackers, well wrapped, at room temperature for up to a week; freeze for longer storage.