Refined Oils vs. Unrefined Oils: What’s the Difference?

Walk down any supermarket aisle and the oils look much the same. Clear, golden, neutral. But there are really two families on those shelves: refined and unrefined. The gap between refined vs unrefined oils shapes the flavour, the colour and the goodness of what you cook. This guide explains it in plain terms. Then it walks through all 21 cold-pressed oils we make.

One thing first. We only make unrefined oils. The refined notes below are there for contrast. They show what the other route gives you, and what it takes away.

What are refined oils?

Refined oils go through heavy processing. That means high heat, solvents, bleaching and deodorising. The result is pale, neutral and very stable. It has a high smoke point and a long shelf life. For high-heat frying, those are real plus points.

But there is a cost. Refining strips out most of the colour, the aroma and much of the goodness of the seed. That is the heart of the refined vs unrefined oils choice: you gain heat tolerance, and you lose character.

What are unrefined, cold-pressed oils?

Unrefined oils are made the slow way. The seeds, nuts or fruit are simply pressed. The oil is left to settle, then lightly filtered. No high heat. No solvents. Nothing added, and nothing taken out. That is the plainest answer to the refined vs unrefined oils question. This is how every Natura Harmony oil is made.

Because nothing is removed, the oil keeps its true taste, its colour and its goodness. The trade-off is a lower smoke point and a shorter shelf life. So these oils reward a gentle touch. There is more in The True Value of Cold-Pressed, Unrefined Oils.

A word on smoke points and heat

In the refined vs unrefined oils debate, the smoke point is the number people quote most. It is the heat at which an oil starts to smoke and break down. You will see figures for it everywhere. But they are only ever rough. A smoke point shifts with how fresh the oil is, and how it is stored. So treat every number below as a guide, not a promise.

Our rule is simple. We press at low, controlled heat and leave the oils unrefined. So the kindest thing at home is to keep them cool and use them raw. We do not suggest high-heat cooking with any of them. For a hot pan, use a refined oil. Then finish the plate with a drizzle of something special. There is more in our guide to cooking with cold-pressed oils.

All 21 of our oils, at a glance

A quick reminder before the list. In the refined vs unrefined oils question, a refined version of any oil here would behave in much the same way: a higher smoke point, but far less flavour and goodness. We make none of them refined. So below we focus on the cold-pressed oil you would actually buy, with a rough smoke point and the best way to use it. Keep them cool, and keep them off a fierce heat.

1. Sunflower Oil (from dried seeds)

Smoke point: low, around 110°C. Rounder and fuller than the everyday supermarket sort, with a soft, gentle warmth. Has vitamin E. Best in cold dressings, dips and drizzled over grain salads.

2. Corn Oil

Smoke point: low to medium, around 160°C. Mild, light and gently sweet, with a soft golden colour. Has vitamin E. Best in cold dressings, dips and homemade sauces.

3. Grape Seed Oil

Smoke point: one of the higher among our oils, around 190°C, though we still suggest cold use. Clean, light and almost neutral. Has vitamin E. Ideal for dressings and marinades, where the other flavours lead.

4. Pumpkin Seed Oil

Smoke point: low, around 160°C. Nutty and earthy, with a soft green note and a deep green colour. Has vitamin E. A finishing oil, kept off the heat and added at the end.

5. Walnut Oil

Smoke point: low, around 160°C. Rich, buttery and deeply nutty. Has omega-3, omega-6 and omega-9 fats and vitamin E. A finishing oil for salads, pasta and warm bread. Contains tree nuts.

6. Hazelnut Oil

Smoke point: low to medium, around 160°C. Sweet, fragrant and richly nutty. Has vitamin E and unsaturated fats. A finishing oil, lovely over salads and roasted vegetables. Contains tree nuts.

7. Sesame Oil

Smoke point: around 175°C, gentle heat at most. Pressed from raw seeds, so it is light and delicately nutty, gentler than dark toasted sesame oil. Has vitamin E. For dressings, noodles and finishing. Contains sesame.

8. Black Sesame Oil

Smoke point: around 175°C, gentle heat at most. Pressed from raw black seeds, so it is fuller and earthier than pale sesame oil, not roasted. Has vitamin E and plant sterols. For dressings and over rice. Contains sesame.

9. Flaxseed Oil

Smoke point: very low, around 107°C. Never heat it. Mild and nutty with a fresh, grassy edge. Has omega-3 (ALA). For cold dishes only: smoothies, yoghurt, porridge and dressings.

10. Hemp Seed Oil

Smoke point: low, around 165°C, best used cold. Nutty and grassy with a fresh green colour. Has omega-3 and omega-6 fats and vitamin E. Made from food-grade hemp seed only, it contains no CBD, THC or other cannabinoids. For dressings and smoothies.

11. Chia Seed Oil

Smoke point: very low, around 107°C, like flax. Keep it cold. Light, clean and mildly nutty. Has omega-3 (ALA). For dressings, smoothies and grain bowls.

12. Camelina Oil

Smoke point: moderate, but at its best cold. Mild and nutty, with a distinctive fresh note of peas and young cabbage. Has omega-3 and omega-6 fats and vitamin E. For salads, grain bowls and roasted vegetables added after cooking.

13. Poppy Seed Oil

Smoke point: low, around 160°C, best used cold. Delicate, gently nutty and softly sweet. Has vitamin E. A European classic for cold dressings and over fresh bread and vegetables.

14. Wheat Germ Oil

Smoke point: very low, around 110°C. Keep it cold. Warm and nutty, with a gentle wheaty cereal note. Has vitamin E. For dressings and smoothies. Made from wheat; contains gluten.

15. Amaranth Oil

Smoke point: low to moderate, best used cold or gently. Mild and nutty with a light, grassy note. Has squalene, a compound found in very few plant oils, along with vitamin E. For dressings and grain dishes.

16. Thistle Oil

Smoke point: low to moderate, best used cold. Pressed from the seeds of the milk thistle plant (Silybum marianum), it is light, clean and gently nutty. Has vitamin E. A culinary food oil for cold dressings and salads, not a herbal supplement.

17. Black Cumin Seed Oil

Smoke point: low, around 160°C, best as a finishing oil. Bold, peppery and aromatic. Has the aromatic compounds the seed is known for. Lovely over hummus, flatbreads and cold mezze.

18. Coconut Oil

Smoke point: around 177°C, the one in our range that takes gentle heat best. Sweet and mild, with a soft coconut aroma. It is solid when cool and liquid when warm, which is normal. Good for baking, curries and gentle frying. (200g jar.)

19. Sea Buckthorn Oil

Smoke point: low, best used cold and sparingly. Sharp, tangy and fruity, with a vivid orange colour. Has omega-7, which is uncommon in plant oils, along with vitamins C and E. A few drops lift a dressing or smoothie.

20. Rose Hip Seed Oil

Smoke point: low, best used cold. Light and gently nutty, with a faintly tart, fruity edge. Has vitamins A and C. A fine finishing oil for delicate vinaigrettes and grain dishes.

21. Apricot Kernel Oil

Smoke point: low to moderate, best used cold or in gentle baking. Smooth, mild and lightly nutty, with a soft, marzipan-like sweetness. Has vitamin E and unsaturated fats. A food oil that meets UK and EU food-safety and export checks. For dressings and light baking.

Refined vs Unrefined Oils: Which Should You Choose?

It comes down to the job. Need to fry at a high heat? A refined oil with a high smoke point is the sensible pick. Want real flavour, colour and the character of the seed? An unrefined, cold-pressed oil is hard to beat, used cold or added at the end.

Every oil we make is single-ingredient, cold-pressed and unrefined. Each one is vegan, GMO-free and ISO 22000 certified. From a clean everyday grape seed oil to a bold, dark pumpkin seed oil, the whole range is in our shop.