https://www.youtube.com/watch?v=ZXcM6g-JaBo

Looks like a recipe for pitting corrosion to me. It'll work in the short term but longer term....?

I'll stick with aluminium foil and coke I think...

I used soda cystals and a battery charger (electrolysis).
I can't believe how the rust fell off, looked like new after a few hours!