I got some yeast from the local brewery near the end of July, it has been in the fridge since then and I have about 200ml. It has been stored under beer in a sealed jar. Will this be ok to use for my next brew this weekend? I have some DME that I can make a starter with, although I have never made a starter before but have read plenty about it. the alternative is going to the LHBS tomorrow to pick up some dried, either GV12 or S04, not decided yet, but if I can use the brewery yeast that would be preferable. Should I make a starter tomorrow and see how it performs or just ditch it and get the dried?