what's a good natural food safe oil that won't go rancid

[Thomas Canfield]

Grapeseed oil, available at health food stores, works well for a food safe finish similar to walnut oil. It does produce a little more luster. I got put onto this by Mesquite woodworkers in the Texas Hill Country, Fredericksburg, Tx several years ago. I put on a thick coat with paper towel and let soak for 5-10 minutes and wipe off for 2 or 3 coats. I have done this with good results on Mesquite, Bradford Pear, and Sycamore.

[Joe Pfeifer]

If you can't find mineral oil, try looking for paraffin oil ( same thing, different name). Try looking in the pharmacy for it. In the US, I always find it interesting that the butcher block oil that is "food safe" mineral oil is 3x the cost of the mineral oil that is sold as a laxative. Olive oil does go rancid .