Human: How do you make a sourdough starter? Assistant: 
To make a sourdough starter, mix equal parts of water and flour in a bowl. Stir the mixture until it is combined, then let it sit for 12-24 hours. After that time, add equal parts of fresh flour and water to the starter. Continue stirring and feeding your starter every 12-24 hours with fresh flour and water. You can also add a small amount of honey or oil to help the starter rise.