Calories in Walnut Oil: Full Nutrition Breakdown

Walnut oil is a delicate, flavorful oil pressed from English walnuts, valued for its rich nutty taste and impressive omega-3 content. A single tablespoon provides about 120 calories and is notably high in both polyunsaturated omega-3 (ALA) and omega-6 fatty acids. It is best used as a finishing oil or in cold preparations like salad dressings to preserve its flavor and nutritional benefits.

Calories by serving size:

Of the polyunsaturated fat in walnut oil, approximately 10.4 grams per 100 grams is alpha-linolenic acid (omega-3) and about 52.9 grams is linoleic acid (omega-6), giving it one of the higher omega-3 levels among nut oils.

Frequently Asked Questions (FAQ)

How many calories are in a tablespoon of walnut oil?

One tablespoon of walnut oil (about 13.6 grams) contains approximately 120 calories. Like other oils, all of these calories come from fat, with no protein, carbohydrates, or fiber.

Is walnut oil good for salad dressings?

Walnut oil is excellent for salad dressings thanks to its rich, distinctive nutty flavor that pairs well with leafy greens, fruits, and cheese. It works particularly well in vinaigrettes and can elevate simple salads with its depth of taste. Because it is a finishing oil, it is best added after cooking or used in cold preparations.

Can you cook with walnut oil at high heat?

Walnut oil is not recommended for high-heat cooking because it has a relatively low smoke point of about 320 degrees Fahrenheit (160 degrees Celsius) and its high polyunsaturated fat content makes it susceptible to oxidation and breakdown. Heating walnut oil can destroy its delicate flavor and beneficial fatty acids. It is best used for light sauteing at low temperatures or as a finishing drizzle.

How much omega-3 is in walnut oil?

Walnut oil provides approximately 1.4 grams of alpha-linolenic acid (ALA) per tablespoon, making it one of the better plant-based sources of omega-3 fatty acids among cooking oils. While this is less than flaxseed oil, it is significantly more than most other nut or seed oils. The body can convert a small portion of ALA into the longer-chain omega-3 fats EPA and DHA.

How should walnut oil be stored?

Walnut oil should be stored in the refrigerator in a tightly sealed, dark bottle to protect it from light and heat, which accelerate rancidity. An opened bottle typically lasts three to six months when refrigerated. Because of its high polyunsaturated fat content, walnut oil goes rancid faster than more stable oils like olive oil, so it is best purchased in small quantities.