[header] How to make sourdough bread [title] Select a container for your starter. [step] A " starter " is a slurry of flour and water, and it provides the vehicle in which your yeast will propagate. You need a high concentration of yeast to leaven your bread, so you have to get a colony going before you can start baking. 
Any glass or plastic container with a lid will work for a sourdough starter. [substeps] Canning jars are excellent, as are empty pickle or jam jars.