This information on yeast strain sources and comparisons between White Labs and Wyeast was put together by Kristen England. He says, "I tried to get the exact source of each breweries yeast and if I was confident I was correct I put the original brewery. If I have evidence of a yeast strain but NOT am not 100% confident I put my idea and a '?'. If you have any questions, comments or input please let me know."
This is the intellectual property of Kristen England and may not be rebroadcast in any form with out express permission from Kristen England. In other words, if you want to use any of this information, please email Kristen at email@example.com to get his permission.
Mr Malty's Pitching Rate Calculator™ is the result of many months of laboratory experiments. It uses precise formulas based on months of experimentation and feedback from leading yeast suppliers. It can calculate the amount of starter wort needed, number of yeast packs required, amount of repitching yeast needed, the effect of stir plates, dry yeast rates, will estimate the viability of your yeast based on the date it was harvested, and lots more. Enjoy!