Was going to make a blackberry mead in a 3 gallon fermentor, when i started reading some of the books it tells me how many blackberries to use dependent on how strong of a blackberry flavor i want, but my question is. from what i have been reading it takes 9 pounds of honey for the 3 gallons. But if i add 8 pounds of blackberries to my ferment, do i reduce the amount of honey that i add. Also i was reading it might be a good idea to cook the blackberries first to reduce the risk of bacteria. is this normal proceedure?