How to clean copper mesh?

[kingy]

I've tried 1,2 and even 3 teaspoons a litre with citric acid to clean my copper mesh and still has silvery shit on it and is quite dark overall.
What are other people using and how much. Thx

[The Stig]

I dump half of one of these into about 5L hot water , just enough to cover all my copper bits and jiggle the bucket.
A few hours later everything’s clean .
Plates need to be dismantled

[Basco]

551 is what I’ve learned, no scrubbing needed..
500ml water
50ml hydrogen peroxide
1 ounce (28g) citric acid

[bluc]

You can just steam with vinegar then run your sac alcohol run again too...