There is a rather popular school of thought that no matter what you start with, your culture will eventually be overtaken by the flora local to you. I am not 100% convinced, but it makes sense. The flour you feed it with has its own strains that will compete.
Up to this point, I have only used my locally cultivated starter. The bread it makes is amazing.
The recent failed experiment was part of a larger effort. I used a sample from
Ed Wood's catalog that I bought well over a year ago. In particular the Austrian strain. After just one day the thing blew up like crazy. I was doubtful it was even close to ready, but wanted to see what would happen. Epic fail. Now that it looks much healthier I am going to start a loaf tonight.
If it tastes any different than what I usually make, I might stick with it to see how it changes over time.
In a nutshell, there's nothing wrong with getting an already active culture and it will get you up and going faster, but it's been my experience that it's not needed. It generally just works with plain ol' flour and water plus time.
Four days/feedings later, and this is how it looks after just 4 hours.
View attachment 1064131
Unlike last time, the starches are really breaking down nicely, meaning a very active population. This should make a decent loaf of bread.
Last time, it was much more liquidy.... with a nice lump of very thick dough at the bottom. When it's smooth like this, it's ready.
I'd have the same results if I started with just flour and water, and gave it a few more days.
Going to be following the exact same technique as the failed effort earlier, so I won't bore anyone with the process until after the cold-fermentation is done and it comes out of the fridge tomorrow.