On the first use, no less! Just fried something up in bacon grease over moderate heat and now the entire cooking surface is dark brown and will not clean off even after scrubbing until my hand practically fell off. Tried Barkeeper's Friend already; have also applied a paste of baking soda and let that sit for a while. Is bacon grease AC's Kryptonite, or am I an idiot of some as-yet-undetermined kind?
Would be grateful for any tips. Thank you!