[MBCook]

The author of the peace also mentioned that while there are food safe epoxies they were worried that they may be less food safe than expected when used with high temperatures like tea or coffee as opposed to being used in a simple serving dish.

[xipho]

According to https://www.lakesidepottery.com/Pages/Pottery-tips/ceramic-r... there are no food safe epoxies, including Kintsugi...

[ryandamm]

Certified food grade epoxies are used in industry all the time; in fact, some wine is aged in epoxy-coated concrete tanks, and the inside of soda cans these days includes a thin layer of food-grade epoxy.

I will not fault anyone for not believing the certification, but I would personally want to see a more authoritative source than an undated ceramics FAQ. But this is just personal style! Being suspicious of regulatory thresholds is prudent.

(And this FAQ has me wanting to revisit my priors and research this a little more specifically, because its assertions are plausible, but need sources or explanations or dates, for cross-checking. Food-grade epoxy I believe in would be a handy thing to have exist; I do have some certified food grade epoxy in my garage that I haven’t used for anything yet and I’d dislike downgrading it to just “epoxy.”)

[xipho]

Completely agree. Was looking for citations too and this was the first I hit, wish they pointed forward.

[r2_pilot]

No worries, with Claude's assistance I came across the FDA's Title 21 chapter 1 subchapter B, specifically 21CFR175.300. You're welcome to see what the US government has to say versus some random ceramic site.(edit:tl;dr safety-tested food safe epoxies exist)

[rtpg]

so are all the fixed up tea cups actually seeping stuff into the drink? I get that's always possible but a teacup is literally a container for near-boiling water