Hey, just looking for a confirmation on yeast rafts vs mold here. Day 3 since brewing, slight airlock activity and signs of what is likely yeast “dust” down the sides. Are some wild yeasts top-feeding? I harvested the yeast from my yard, so I’m expecting it to have some trouble but would rather pitch a pack than get moldy beer.
I would suggest at least investing a little in malt agar plates. Anything you harvest wildly you should at least be able to streak out and separate the different microbes you've managed to collect. From there you can isolate what you think is yeast and build up a starter from that.