Human: How do I make a good sourdough bread? Assistant: 
To make a good sourdough bread, you will need to start with a starter. You can make your own starter by mixing equal parts of water and flour together and letting it sit for several days until it has fermented. Once you have your starter, you can mix in some additional flour and water to form the dough. Knead the dough until it is smooth and elastic before allowing it to rise. After rising, punch down the dough and shape into loaves. Let the bread rest for about an hour before baking. For best results, use a preheated oven and bake at a temperature that is slightly lower than what is recommended on the recipe.