The food safe quality of the finish is not the point. The finish will be coming off, and it will be in the beer. If this is the taste that you want, then right on.
Best option is to make your own. Just take a plank and remove all the wood that don't look like a mash paddle.
leave it bare, and wash it off as soon as you are finished with it and hang it up in a clean place. It will dry out, and be ready to use the next time after a quick rinse.
Mine, displayed by my assistant brewer: