I have a yeast question. I once brewed a belgium wit and when i opened the vial of yeast it kind of exploded and I bet I lost 1/2 the yeast, but my beer still fermented fine. Today I am planning on brewing 2 5 gallon batches of a summer Kolsh. My pot is only 8 gal so I have to brew 2 5 gallons. Do I need to buy 2 vials of the Kolsh yeast or could I just use 1/2 in each batch. I am thinking I could use 1/2, but I want confirmation from you guys. Thanks!!!