Reply by Gene Howe

Having never used (or seen) a Watco product designed for finishing surfaces that will contact food, my observations might not be worth 2 cents. However, I have used their products on many other projects and have found that the odor lingers for months, years even, when it’s closed up, like a box interior.
JMHO, I’d never use it on any food prep surface.
Behlens makes a food safe finish. I’ve used it on bowls and candy dishes, but I’m not sure it would hold up well on a cutting board.
Lumberjoe has it right.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton