Pitching a healthy pitch of yeast is vital to a good fermentation and many brewers make large yeast starters to get their beer fermenting fast!
Large populations of active yeast help ensure flavorful beer free of off flavors.
Erlenmeyer flasks are made from borosilicate so you can move directly from gas stove top to ice bath for cooling without cracking your Flask! This reduces the risk of contamination when transferring from one container to another.
It is not recommended to use directly on electric heating element. Only use gas.
Warranty on this product does not include breakage if you break the product.
Further Reading and Viewing on How to Make a Yeast Starter: