Re: Walnut Oil Finish
Response To:
Re: Walnut Oil Finish ()

Mike Jones
Remember---ALL nut and seed oils will become rancid in time. The chemical process of rancidification exchanges one chemical element for another, and the older the walnut oil, the slower the cure time.

Walnut oil will yellow if and when it cures (polymerizes). Don't take my word for it. Do a couple of simple tests in your own shop, then decide if you want to use it in place of a real finish.

Test (1) Look for a product date on the label. ("Best used by_____" date.) the fresher the better.

Test (2) put a capful of your walnut oil on a clean white cloth, save it, and wait. Check on it after 6 months and again in a year or so. Is the yellowing ok with you?

Test (3) Taste it. A couple of drops is all it takes. If it does not taste good, and a yucky flavor that is slow to go away is experienced, it has rancidified and the polymerization will be retarded.

Yeah, your oil has been "heat-treated". At the plant they use heat to drive off the solvents (often Hexane, a lot like gasoline) used to get the last drop of oil out of the broken and miscolored meats. The process does not improve the performance of the oil in any way. Cold Pressed walnut oil, is considered to be superior---for salads, or for salad bowls.

Happy Holidays to all!

© 1998 - 2017 by Ellis Walentine. All rights reserved.
No parts of this web site may be reproduced in any form or by
any means without the written permission of the publisher.