> how dirty is too dirty to recycle in the case of aluminum I doubt they care about anything on the aluminum at all. If you watch videos of people melting down

> how dirty is too dirty to recycle in the case of aluminum I doubt they care about anything on the aluminum at all. If you watch videos of people melting down soda cans into aluminum ingots [0], there is a lot of dross or non-aluminum material that needs to be removed. Since there is already a process in place to eliminate non-aluminum material, I wouldn't worry about a bit of food. [0] https://www.youtube.com/watch?v=ldURYZyRYMA https://www.youtube.com/watch?v=ldURYZyRYMA