After spending an hour in my highly organized shop, I found several articles on BLO.
It seems when you add mineral spirits to BLO it changes the effect of the driers (longer time to cure), as if a day between coats is not long enough.
I did find two artilces in FWW that made refernce to food safe finishes, tung oil (long drying time and really provides no protection for the wood), Waterlox Orinial Finish, Mineral Oil and linseed oil that does not include metallic driers. The other is Walnut Oil, supposed to be in the salad dressing aisle at your supermarket. The article says to apply 3 coats with two days drying time between each coat.
As to the other item, Watco/Danish oil finish would work well. I did my kitchen cabinents using it. I flooded the surface with the oil, kept and eye for dry spots (added more finish too them) and wiped it off. You need to check every 30 minutees or so to wipe off the areas that bleed to the surface.
Second coat was applied and rubbed with 320 wet/dry sandpaper and wiped down, check it for bleeding about once an hour. Let it dry several days and either apply another coat or apply some clear finish. I opted for a satin finish, I should say WE opted for the satin finish (you know how that is).
When you get them finished, I would like to see them.
Later,
sawman