Walnut Oil

What Is Walnut Oil?

Walnut oil is a nutty, aromatic vegetable oil obtained by pressing walnut kernels (Juglans regia). The cold-pressed form in particular preserves the characteristic aroma and nutritional value of the walnut.

It contains a high proportion of polyunsaturated fatty acids, especially omega-3 (ALA). Since these fatty acids are heat-sensitive, walnut oil is generally used not for frying but in salad dressings and cold applications.

Nutritional Values of Walnut Oil

Like all pure oils, walnut oil contains about 884 kcal of energy and 100% fat per 100 g; its calories come entirely from fat. Its standout feature is its high omega-3 (ALA) content and vitamin E content.

What Are the Benefits of Walnut Oil?

With its polyunsaturated fatty acids and omega-3 (ALA) content, walnut oil can contribute plant-oil variety to a balanced diet. Like all oils, it is high in calories and should be used in moderation.

This information is general; walnut oil is a food and is not a substitute for medical treatment.

How to Choose Walnut Oil

Good-quality walnut oil should be cold-pressed, in a dark glass bottle, and freshly nutty-smelling; a rancid, paint-like smell indicates spoilage (rancidity). Buying a small bottle helps preserve freshness.

• Should be cold-pressed and in a dark glass bottle (protected from light)
• Smell should be fresh and nutty; a rancid smell indicates spoilage
• A small bottle that will be used up quickly should be preferred

How to Store Walnut Oil

Because of its omega-3 content, walnut oil turns rancid quickly, so it should be stored in the refrigerator, in a dark, closed bottle, for a few months. Heat, light, and air accelerate rancidity.

Using Walnut Oil in Cooking

Walnut oil is mostly used in salad dressings, cold sauces, and drizzled over cooked dishes at the last moment; because it is heat-sensitive, it is not preferred for frying or high-heat cooking.

How to Make Walnut Oil Salad Dressing

Walnut oil is whisked with a little vinegar or lemon, salt, and spices to make a nutty dressing suited to greens and beet-walnut salads.

Why Isn't Walnut Oil Used for Frying?

Its high omega-3 content can easily break down with heat into undesirable compounds, making walnut oil unsuitable for high-heat cooking.

Which Recipes Use Walnut Oil?

Salad dressings, cold sauces, drizzling over cooked vegetables, and some sweet-nutty recipes are the best-known uses of walnut oil.

Frequently Asked Questions

Can walnut oil be used for frying?

It is not recommended; due to its heat-sensitive omega-3 fats, it breaks down at high heat. It shines in salads and cold uses.

Why is walnut oil stored in the refrigerator?

Due to its omega-3 content, it turns rancid quickly at room temperature; a cold, dark, closed environment slows this spoilage.

Is walnut oil used for infants/children?

It is a plant-based oil used in cooking; however, it is recommended to consult a health professional before adding oil to infant nutrition.

What does walnut oil taste like?

It has a distinctly nutty, walnut-like aroma; this flavor adds character to salads and cold sauces.

Can rancid walnut oil be used?

No; a rancid, paint-like smell indicates spoilage, and this oil should not be consumed for either taste or health reasons.