@rhercopper helps in some ways but it's not a requirement
of the various things the internet suggests, the egg whites being too cold seems most likely followed by possible oil contamination from a not-perfectly-clean whisk
@rherthe end result I'm getting is good (waffles) but I have yet to achieve "soft peaks" with my egg whites and I don't know if that will actually be better
@deprecated_ii@rher You don't need copper. Keep trying with different eggs. It's possible that those few you used had a bit of yolk. Also, if you want to keep the peaks, use cream of tartar.