Kilner Sourdough Starter Jar SetSourdough Starter Jar Set, 350ml, glass. 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 and 6 labels. How to use instructions and recipes included.