I found out that it is nearly impossible in Europe to buy a 10l enamelled bucket with a lid. I need one for my organic waste, since I found that both metal and plastic ones tend to keep the smell despite cleaning them weekly.
Edit: I just checked:10l is max. There are no bigger ones and now I wonder why :)
https://elcishop.com/product-category/емайлирани-съдове/
https://www.mira-n.net/emailirani_rom_black.html
https://zana-bg.com/kuhnya/sdove-za-gotvene/emajlirani/kupro...
so 16L - and 50L - pots do exist.. but you have to find some importer around you. Manufacturers Seems russian, romanian, bulgarian..