Add in the 1 tsp instant yeast, and 1 cup bread flour. (raegunramblings.com)
I followed the instructions, only I used bread flour instead of AP. (smittenkitchen.com)
If your starter is 100 % regular flour, then go ahead and replace about 50 - 100 g of bread flour with whole wheat flour in this recipe. (theclevercarrot.com)