[DannyBee]

It's not a terrible assumption - it's a requirement to sell a wood finish in the US/Europe.

Under temperature, sure, they differ a bunch. But in terms of food prep, no, they are all non-toxic and edible once cured.

[mbrock]

Flexner's "Understanding Wood Finishing" has a section about "the myth of food safety" that pretty directly states that food safety isn't a serious concern for fully cured finishes.