Make your own sourdough, the 100% natural alternative to yeast! The Lékué Sourdough Starter Kit has everything you need to make sourdough at home. The kit consists of two glass jars with lids with a valve to vent the gasses, A silicone strip to mark and track the dough as it rises and a spatula sized for the glass jars. It also includes 3 delicious recipes to get started with sourdough, including pizzas!