Little activity after 7 days -- used an old packet of dried starter
A week ago, I decided to try to revive a 10-year old packet of dried starter (from Sourdough Intl.). I had lost the packet in a move and found it during a file clean out! I was not hopeful about it, but thought I would give it a try. I have been feeding it at ~1:1:1 by weight. On day 3, I divided it into 2 batches - one that was fed every 12 hours, and one that was fed every 24 hours (on the left and right of the photo, respectively). I don't have much activity in either one. Just a few bubbles and no visible rise at all. Smells a bit sour and vomit-y. The smell and activity of the starter has not changed at all for the past 3 days. Is there any point in a young starter's life where it is beyond saving? Is there a point where the undesirable bacteria take over and the yeast no longer have any chance of growing? I don't have any signs of mold, no hooch formation, no weird color. Should I keep at this one, or give it up?