Burnt DME on bottom of starter beaker - Cleaning suggestions?

[NewBrew75]

So I messed up and poured in my DME into my beaker/flask, filled with water, then put on the stove. I walked away for a few minutes, and now I have a nice ring of burnt crap on the bottom of my beaker. I'm trying oxyclean as I type this, but if that doesn't work, any suggestions?

 

[icu812]

A strong 24 hr oxyclean soak should do it.