Has anyone else found brown spots in their White Labs yeast lately? I found them a couple months ago and again today, this time in WLP001 California Ale, best by date of DEC 24, 2022. I'm not sure what to make of this. No, they aren't bubbles.
They look like dried growth medium.
I'm pretty sure the content is still A-OK, but reach out to White Labs, with that picture and a picture of the outer sleeve showing the batch ID and date, to hear what they have to say.