Walnut oil

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A can of California roasted walnut oil

Walnut oil is oil extracted from Persian walnuts.

Culinary use

Walnut oil is edible and is generally used less than other oils in food preparation, often due to high pricing. It is light-coloured and delicate in flavour and scent, with a nutty quality. Although sometimes used for pan frying, most chefs do not use walnut oil for high temperature cooking, as heating can remove some of the oil's flavour & nutrition and produce a slight bitterness; instead it is used primarily as an ingredient in cold dishes such as salad dressings, where its flavour more easily comes through. In addition, the antioxidants present in the oil are easily destroyed in cooking. Most walnut oil is produced in France^{[citation needed]}, though there are also producers in Australia, New Zealand and California.

Walnut oil is a good source of omega-3 fatty acids which are essential to human nutrition.

Artistic use

A cup of California roasted walnut oil

Walnut oil was one of the most important and vital oils used by Renaissance painters. Its quickness of drying and lack of yellow tint make it a good oil paint thinner and brush cleaner. However, the paint film it produces is considered by some to be inferior to that of linseed oil.

Commercially, walnut oil has become harder to find; demand is often low, and stock can become rancid if kept improperly. Instead of walnut oil many artists and stores sell linseed oil, poppyseed oil, and safflower oil as replacements.

Walnut oil is favoured by some woodworkers as a finish for implements that will come in contact with food, such as cutting boards and wooden bowls. When creating your own oil & wax mixture, walnut oil is a great choice, due to its safety and low rancidity. It should be combined with beeswax in a mixture of 1/3 oil to 2/3 beeswax. ^[1]

1. ^ http://www.erikorganic.com/blog/labels/safe%20wood%20finish.html