cooking with copper

don’t loose it Have recently ordered a load of chemicals to patinate copper different colours. At the moment I only have ammonia and a mysterious white powder that together make a lovely turquoise, blue. I used it on the copper framing this piece. But I’d like to get some greens and recreate the gorgeous red I managed to make happen somehow on the piece called ‘column’. I think I used plant fertilizer but have never been able to recreate it again. Found some recipes on the web so I’ll be cooking with copper soon!