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BlueClawWorkshop

Copper Food Safe Coating

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Hi All,

I am making a copper chalice and ciborium for a Catholic Mass to be celebrated during a mission trip.  I am concerned about the possibility of copper tainting the wine. 

1.  Is my safety concern valid?  Do I need to use a protective coating?
2.  What food safe coatings can I use and where can I get them?  (My searches so far have not been fruitful.)
3.  I am not comfortable with my skills to purchase silver and gold, so the next possibility is pewter.  If you recommend I use food grade pewter, is there a special way I need to forge pewter?

Thank you,

Anthony
 

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Well I would have suggested taking sheet silver and hard soldering a silver liner in the cup.  Wine can be quite acidic especially as it turns toward vinegar---not a good mix wrt food safety. Now the ciborium will probably be ok if it's polished before use.

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Would tinning the inside (as one does with copper cookware) be an option?

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Some ciboria have internal glass cups within the enveloping metal vessel.

Could you locate such a glass vessel that would fit snugly within your crafted ciborium?

There are a number of acids in wine such as tannic acid. T. P. is right that ethyl alcohol will turn to acetic acid if left standing.

SLAG.

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