Canola, soybean, and the rest we will never stock

Seven names end the conversation on any label we pick up. Canola. Soybean. Corn. Sunflower. Safflower. Grapeseed. And the catch-all that covers whichever of those was cheapest that month: vegetable oil.

Not because they come from seeds. Because of how they’re made and what they fail to bring. Stick with us and by the end of this you’ll be able to apply the rule yourself — including to a seed oil we do stock, and why.

This is the most common reason a product doesn’t make it onto our shelves. Not sugar. Not preservatives. These. They are in nearly everything, including a great many products marketed specifically to people trying to avoid them.

What actually happens in the refinery

An olive gives up its oil under pressure. So does an avocado and a coconut. You squeeze, oil comes out, you eat it. That process is thousands of years old and involves no chemistry at all.

Rapeseed, soybeans and corn germ hold their oil tightly, and there isn’t enough of it in there to make pressing alone worthwhile at industrial scale. So the plant does this instead:

1. Heat and crush. The seeds are cooked and rolled flat.
2. Solvent wash. The flakes are bathed in hexane, a petroleum distillate, which dissolves out the oil that pressing left behind.
3. Boil off the solvent. Most of it. Trace residue is permitted by regulation.
4. Degum and refine with caustic soda, to strip free fatty acids.
5. Bleach through clay filters, because the crude output is dark and murky.
6. Deodorize with steam at around 450°F under vacuum, because at that point the oil still smells and tastes like something no one would willingly swallow.

Six steps. Two of them exist purely to hide what the earlier steps produced.

An ingredient that needs a petroleum solvent to extract and four rounds of correction to become palatable isn’t really an ingredient. It’s an industrial output that happens to be edible.

“But what about cold-pressed?”

We get asked this constantly, usually by someone holding a bottle of cold-pressed sunflower oil, and the answer is still no. To explain why, here is the actual test. An oil has to clear both halves of it. One is not enough.

One: how was it made? Mechanically pressed or rendered. No solvent, no bleach, no deodorizer.

Two: what does it bring? It has to do something that olive, avocado, coconut, butter, ghee, tallow or lard doesn’t already do better.

Cold-pressed canola clears the first and fails the second. So does cold-pressed sunflower, safflower and grapeseed. Gentler extraction changes how the oil was made; it doesn’t change what the oil is — a fragile, heavily polyunsaturated commodity oil from a crop grown at enormous scale for industrial use.

Ask the second question of it out loud and there is no answer. What does sunflower oil do in your kitchen that butter doesn’t do better? It’s cheaper and it’s neutral-tasting. Neither of those is a nutritional argument. Nothing to weigh, so nothing worth trading for — and no version of it, pressed or expelled or organic or in a nice amber bottle, gets shelf space here.

The one seed oil that does clear it

Since we’re running that test on everyone else’s products, here it is run on ours.

Four of the five Frontier Tallow Co. butters contain cold-pressed camelina oil, between four and eight percent. Camelina is a seed. We put it there on purpose.

Test one: mechanically pressed, unrefined, unbleached, undeodorized, never within a mile of a solvent. Clears it.

Test two: camelina is one of very few plant oils carrying a meaningful omega-3 load that also stays stable instead of going rancid in the jar. That combination is genuinely rare, and it’s exactly what a shelf-stable butter needs. Tallow alone won’t do it. Clears it.

That is the entire difference between camelina and sunflower. One answers the second question. The other never has.

We’re telling you rather than waiting for someone to find it on the ingredient panel and feel misled, because a standard you only enforce against other people isn’t a standard. If you think we got this one wrong, come tell us in the store — we’ll show you the reasoning and you can decide for yourself.

The stability problem

Polyunsaturated fats are chemically fragile. The double bonds that make them “poly” are exactly the bonds that react with oxygen, heat and light. Industrial refining strips out most of what would otherwise go rancid visibly, which is how an oil sold in clear plastic under supermarket fluorescents still looks fine two years later.

Hold that same oil at frying temperature through a shift and the chemistry is not subtle. Tallow, ghee and coconut oil are largely saturated and monounsaturated. They don’t have those fragile bonds to break. That isn’t nostalgia; it’s why people cooked with them for most of history. They keep.

Where they hide

Look only at bottles of cooking oil and you’ll miss nearly all of it. Check these:

• Salad dressing and mayonnaise — including most “avocado oil” versions, which are frequently mostly canola with just enough avocado oil to justify the front of the label.
• Tinned fish — sardines and tuna packed in sunflower or soybean oil. Look for olive oil or water.
• Nut butters — palm and rapeseed added as stabilisers.
• Chips and crackers, including the organic ones.
• Protein bars and “clean” snacks — sunflower oil is the current favourite, because it reads as healthier than canola.

What’s on our shelf instead

Cold-pressed olive oil from a family mill four miles from our front door. Avocado oil. Coconut oil. Grass-fed butter and ghee. Rendered tallow and lard.

Six fats. They cover every job a kitchen has, they were all food before they were ingredients, and not one of them has ever met a solvent. Camelina makes seven, and it had to earn it.

The full rule is on the standard page.