Cheesy Jalapeño Breadsticks Are the Best Thing to Bake This Weekend
In a tall jar or medium bowl, mix the mature starter or yeast, flour, and water until incorporated. Cover with a lid or clean kitchen towel and leave in a warm place for until doubled in size, 3 to 4 hours with starter or 1 1/2 to 2 hours with yeast. You can use your levain immediately, or refrigerate it for 12 hours to use later, or the next day.