Why copper pans are great (and sometimes poisonous)

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Thanks to Cardinal Spirits in Bloomington, Indiana, for the look at their copper stills: https://www.cardinalspirits.com/

2022 scholarly description of copper toxicity: https://www.ncbi.nlm.nih.gov/books/NBK557456/

2022 study showing that Moscow mules leach potentially hazards amounts of copper our of copper mugs: https://www.neha.org/publications/journal-environmental-health/januaryfebruary-2022-jeh

2009 study showing copper interacts with proteins in human saliva: https://pubs.acs.org/doi/10.1021/jf804047h

2006 literature review on egg protein and gelling, addresses the complex role of disulfide bonds (which can be interrupted by copper): https://www.scielo.br/j/sa/a/7W4n5V7gP9CPGWBGXMWQPBq/?format=pdfu0026lang=en

1984 letter in the journal Nature about whippings eggs in copper bowls, co-authored by Harold McGee: https://www.nature.com/articles/308667a0

Thermal conductivity stats I referenced, compiled on Wikipedia: https://en.wikipedia.org/wiki/List_of_thermal_conductivities