So, if you think you're cool and can start your own starter without a mix, let me caution you to NOT BE LIKE ME. Why? I'm an idiot. I'm forgetful. I like to break the rules. Of course, I didn't mean to break these, but that leaves us back at forgetful. You must dump half and add your flour and water everyday. Please, for the love of god, do not let it sit out for three days just festering in its original form. Imagine the most technicolor vomit you can, really trippy acid-flashback kinda stuff. Got it? Now imagine that cooking in its own juice on a warm frige top for a while. You want that wafting out at you unsuspecting chumps? No, you don't. Because it's UNHOLY!
Be cool. Follow the rules.
I'm gonna go throw up.