Can Flaxseed Oil Be Used for High-Heat Cooking?

Why the answer is no

• Flaxseed oil has a low smoke point, meaning it starts breaking down at temperatures a normal frying or tempering process easily reaches.
• Heat damages the delicate fat content that makes flaxseed oil worth buying in the first place, defeating the point of using it.
• Heated flaxseed oil can also develop an unpleasant, bitter flavour rather than simply losing potency quietly.
• For any dish that needs heat, use mustard, sesame or another cooking oil, and add flaxseed oil afterward if wanted.
• This is a consistent rule across brands and grades, not something a particular pressing method changes.

Our standards

Flaxseed oil and heat questions

What happens if I accidentally heat flaxseed oil?

It is not dangerous, but it loses much of its value and can taste noticeably bitter. It is best not used for that dish's cooking.

Is there a version of flaxseed oil made for cooking?

Not really, food grade flaxseed oil is consistently intended for raw use rather than heat based cooking.

What oil should I use instead for frying?

Mustard oil, sesame oil or another oil rated for cooking, adding flaxseed oil separately once the dish is off the heat.

Does a small amount of heat matter, like a warm dish?

A gently warm dish is generally fine. It is direct cooking heat, frying or tempering, that causes the real breakdown.