Day 1: In your jar, mix 1 cup of whole wheat flour with ¾ cup of water. Stir until no dry spots remain. Cover loosely with a lid or cloth and leave at room temperature (68–75°F).
Day 2: You may see small bubbles and smell a little tang, that’s a good sign. Discard half of the mixture and feed it with ½ cup flour and ½ cup water. Stir and cover again.
Days 3–5: Continue feeding every 24 hours. As the culture matures, it should double in size between feedings and smell pleasantly yeasty. If it’s cool in your kitchen, place the jar near a warm spot, like on top of the fridge or near the stove.
Day 6 and Beyond: When the starter consistently doubles within 4–6 hours of feeding, it’s ready to bake. You now have a strong, bubbly wheat sourdough starter ready for bread, rolls, or even pancakes.