Ugh! Burned my starter!

[Chris Craig]

I was heating up some water/DME on the stove a little while ago in my Erlenmeyer flask.  Apparently, I didn't mix the DME in well because I scorched the bottom of the flask pretty good.  Now there's a black ring at the bottom.

Anybody know the best way of removing this, or did I just ruin the flask?

[Roger]

If it won't dissolve in boiling water try letting it soak in dishwasher detergent or you might want to try oven cleaner careful with that stuff though it's quite nasty I think the main ingredient is lie. Good luck!

[jamie_savoie]

overnight soak in a strong oxyclean solution maybe?

[Chris Craig]

I soaked it on oxy over night. Most of it came off. I rinsed and added more oxy. Hopefully it'll be fine tomorrow.

[JohnQ]

When something burns on to our Stainless Cookware, Deb puts dishsoap, water in there, and puts it on a low heat which apparently aids in the breakdown. If it doesn't come off with this oxy soak, try a little heat with it...but watch it this time
JQ

[Richard]

Anything burnt => Oven cleaner.

[pliny]

Just give it to your wife to clean it.   

[Chris Craig]

After a couple of rounds of oxy, there's just a little bit of scarring on the bottom.  No worse for wear.