I just recently started re-using yeast (started due to fears of homebrew shops closing off my access to yeast). I just did my first starter batch, using my first round of saved yeast. I made this 2.5L starter with Wyeast 1056, running on a starter plate for ~20 hours, and then cold crashed in my super-cold beer fridge (@ 34F) for ~12 hours.
On the top of the cold crashed starter, there were small white clumps. I couldn't decide if it was bacteria growth infection, or just some leftover whisps of "starter krausen". The starter had an apple-like smell. I didn't want to risk the batch of beer, so I dumped the starter and used other yeast. Based on picture, I'm wondering if people think this looks like infection, or I dumped it unnecessarily.
On the top of the cold crashed starter, there were small white clumps. I couldn't decide if it was bacteria growth infection, or just some leftover whisps of "starter krausen". The starter had an apple-like smell. I didn't want to risk the batch of beer, so I dumped the starter and used other yeast. Based on picture, I'm wondering if people think this looks like infection, or I dumped it unnecessarily.