<human>:  How do I make a sourdough starter?
<bot>: To make a sourdough starter, you'll need flour, water, and some patience. Begin by mixing equal parts flour and water in a large bowl. Stir until it is fully combined and let it sit for about 24 hours. After that, add more flour and water in equal parts and stir until combined. Let the mixture sit again for 24 hours. Continue to feed the starter with equal parts flour and water by stirring the mixture each day. When it becomes bubbly and active, it is ready to use in recipes.