Sprinkle baking soda over the bottom of the pan, then pour some vinegar over it. You may need to scrub anything that's burned on.
Juliano.....A good wire brush works on mine!
Oven cleaner works.
Hi Juliano. I use Bar Keepers Friend on my pots and pans. It keeps them looking new.
Here is a really good trick I use, if your have tons of food left to the bottom of the pan and hard to get rid of. I would put some warm water and dawn soap plus add one dry sheet from the laundry room. Leave it for 30 minutes and after that just clean or wipe it off. It's that easy. And if your question is the bottom of the pan outside then use Bar keepers friend... the best product so far. I have long list on how to clean all these pots and pans...here you go with the link https://bushraslifestyle.com/the-28-top-rated-best-cookware-sets-buyers-guide/
Hope it helps! Bushra