I would just throw it away.
Steel (plated or stainless or enamel) then the first thing is a LONG
dishwasher cycle followed by a razor blade, copper pad, "Bar Tender's
Friend" and plastic scouring pad.
Fill a sink or other container (like a dishpan) with enough hot water
to cover the pan plus a little. Dissolve in as much powdered
dishwasher detergent (like cascade, not hand dishwashing soap) as you
can get to dissolve, and then add some more. Let it soak overnight.
Scrape off what you can and repeat. It may take a few repeats, but it
will eventually come clean without a lot of scrubbing. Concentrated
dishwasher detergent is strong stuff. It may discolor the pan, but it
will come clean.
There aren't any.....burnt on grease is about like paint to remove.
Cheaper to pitch the pan if you want shiny. I've used oven cleaner,
which works, but corrodes the alum. and turns it a strange color.
Another strategy -- requires some care -- is to do what I used to do
when I messed up a pan when camping. Put it on the stove. Put in
enough water to cover the bottom. Add a little detergent. Heat to
boiling. NOT so high you boil it over. Boil for 5-10 minutes -- you
have to regulate the heat carefully. Then carry it CAREFULLY to the
sink and work the loosened crud off with a plastic scrubber.
Again, as another poster points out, it might be just easier to chuck
it. For one-shot roasting projects, there are those nice heavy foil
pans you can get in the supermarket. Best deal ever for the annual
turkey roast, which is a real PITA to clean up.
If you're talking about stuff on the inside of a pan, you have your
work cut out for you. If it's on the outside, don't bother too much,
unless (like me) you're a bit of an obsessive about things looking
Someone earlier mentioned Bar Keeper's Friend, which has been great on
my stainless steel pans. Bon Ami may work as well for you. Soft Scrub
may be good, too.
Soaking may help soften the encrusting, but don't expect to get it all
in one shot. Try a little each time you clean the pan, and keep at it.
Remember, sharp items may scratch the aluminum and then you're just
adding to the difficulty. Persistence is your best bet.
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