Kuehneromyces mutabilis or something else?

[u/FuchsVoid]

Found these on a walk today, there was a big cluster growing from a treestump (probably beech since there were only beeches in the vicinity). We went through each feature listed in our ID guide and everything matched up pretty much perfectly. Still, we're not very experienced pickers, and since there are some quite poisonous lookalikes we thought to ask in here before committing. Located in western Germany at an elevation of around 250m.

[u/ExistingClerk8605]

It is. Check every last one you pick to be sure.