Made by Guelph's own Escarpment Labs Yeast Company. This is their Sourdough Culture. Here is what they had to say about it "This is a liquid sourdough culture containing active yeast and bacteria. It has been tested by our team of microbiologists to ensure the best and easiest sourdough bread baking experience!
To create a sourdough starter for bread fermentation that works the first time, mix this package with 100mL of your favourite flour!