Glass Sourdough Starter Jar Set contains all components needed to make a successful sourdough starter for a delicious sourdough loaf, pancakes, pizza, naan breads and other sourdough specialties. The set includes two wide-mouth 350ml jars with stainless steel lids, a stainless steel measuring lid, a silicone spatula, 2 rubber bands, 6 labels and instructions/recipes.