I'm leaving for WDW tomorrow morning at about 2am. I decided to let my kids go hog wild on pressed pennies as souveniers this trip, rather than any other stuff.
Last night my son and I sorted through the penny jar and pulled out about 150 of them from 1982 and prior (we stopped at 150, since my intent was to clean them up and then pick the best 100 of them for the trip.)
I poured half of a small container of hot sauce over them and within 3-4 minutes they all cleaned up like new (with no rubbing)! I rinsed them in baking soda and water to bring back the shine. This is a technique I read about online.
Here's the problem. This morning they all have some dark (blackish) spots on them in random places. I took two of them and rubbed them with hot sauce again, just to be sure that I didn't actually damage the surface. Sure enough, they cleaned up like new again.
So here's my question. What do you experts use to clean your pennies that actually keeps them clean?