Oven cleaner (Easy-Off heavy duty or similar), in a sealed plastic bag with the item in question, left for 24-48 hours. Rinse thoroughly with tap water, then DI

Oven cleaner (Easy-Off heavy duty or similar), in a sealed plastic bag with the item in question, left for 24-48 hours. Rinse thoroughly with tap water, then DI water, then distilled vinegar, then tap water & DI water again. Works to strip cast iron, should work for similar gunk. Obviously wear appropriate PPE (long rubber gloves, follow all warnings on the oven cleaner, work in a well-ventilated area, the MSDS[1] is useful though all instructions should be on the label). [1] https://www.globalsanitation.com/edit/files/sds/retail/easy_off.pdf https://www.globalsanitation.com/edit/files/sds/retail/easy_...