Not sure if this is the right section, but I figured I'd throw it out there.
I got some really old supplies from my dad that use to make wine back in the early 70's. Anyways, in his supplies, he had several packets of dried wine yeast and one vile of liquid wine yeast. These things are circa 1973.
A. Is this stuff still any good? If so, is there any advantage of having old yeast?
B. Can you use this yeast to make beer?