I brewed my first beer last night. After a got done cooling it, I put it into the fermenting bucket. After adding yeast and putting on the airlock a few minutes later, this foamy green stuff formed on top of my beer. It's still there after letting it sit overnight. Is it mold?
Yeah, as above it's just hop particles. Mold looks different, you can search images on any search engine to find what this looks like.
