u/Cacmaniac

Hello everyone, I need some advice. I have a friend that wants me to fix a crack in a large wood salad bowl, and then refinish it. I guess they ordered it from over seas. I can fill the crack just fine, but the bowl is painted black. I’m weary of what to use that will be food safe. It’s a jet black flat paint. The original creator told my friend to use ink mixed with tung oil, or an oil based paint. I have no idea what kind of ink to use or paint that would be ok to use in a salad bowl. I’ve looked and didn’t see anything.

What are your suggestions or have used for something similar?