Salt + Soil is an organic, seed-oil-free meal delivery service in San Diego. Every dish is cooked in extra-virgin olive oil, avocado oil, or coconut oil, never refined seed oils. Fresh Tuesday delivery across coastal San Diego. This is what the seed-oil-free standard actually means in the kitchen, and why it matters.

October is olive harvest season, and the oils our kitchen has cooked with since the day we opened are arriving from their source right now, pressed rather than manufactured. That timing is why I wanted to write this one myself. Salt + Soil has called itself seed-oil-free in a caption or a product description more times than I can count, and until now that line has mostly lived as a credential, a box we check because we hold ourselves to it. It deserves more than a line. It deserves the actual explanation, so here it is.

The Oils That Replaced the Oils

The refined seed oils sitting in most kitchens today, canola, soybean, corn, safflower, are new. Not new like a product launch, new like a hundred years old against a food tradition that runs thousands. Nina Teicholz, author of The Big Fat Surprise, walked through this history on Dr. Mark Hyman's show: the industrial process that turns a seed into a bottle of oil runs through roughly seventeen steps, chemical solvents, high heat, bleaching, deodorizing, before it ever reaches a pan. Olive oil is pressed. That's the whole process. One mechanical step, not seventeen chemical ones. The contrast isn't a marketing angle. It's the actual difference between the two categories of fat, and it's the reason we built this kitchen around one of them and not the other.

Why the Oil in the Pan Matters

The oils get grouped by their fat structure, and the structure is what determines what happens when you apply heat. Monounsaturated fat, the dominant type in extra-virgin olive oil and avocado oil, is chemically stable. Polyunsaturated fat, the dominant type in corn, soybean, and safflower oil, is not. Heat it, or even leave it under light for too long, and it oxidizes, generating byproducts including aldehydes, compounds that enter the food and accumulate in the body over repeated exposure. This isn't a hypothetical. It's documented in the Episode 1004 transcript, and it's the mechanism behind why the fat you cook in isn't a neutral choice.

A note on how far to take this: we are not doctors and we don't diagnose or treat anything in this kitchen. What we can say, because Hyman, Teicholz, and Lugavere say it directly on the record, is that the chemistry of the oil changes what comes out of the pan. We'll let the research carry that claim rather than stretching it further than the source does.

The Myth About Cooking With Olive Oil

Here's the one that surprises people most. Somewhere along the way, home cooks got told that extra-virgin olive oil is too delicate to cook with, that it's a finishing oil only, drizzle it on at the end and nowhere near the stove. Max Lugavere, author of Genius Foods, debunks this directly in the same conversation: the Mediterranean kitchen has cooked in olive oil at every temperature for centuries, and the molecular structure explains why it holds up. Because EVOO is roughly 85 percent monounsaturated fat, it doesn't produce the oxidation byproducts that seed oils produce under the same heat. The smoke point conversation that scares people away from cooking with it is measuring the wrong thing.

What the Research Actually Shows

There's a study buried in the Episode 1004 conversation worth naming plainly, because it cuts against what most people have heard about seed oils and cholesterol. A government-funded trial found that a group eating corn oil had dramatically lower LDL cholesterol than a group eating saturated fat, and also had higher rates of heart attacks and death. The result sat unpublished for decades because it didn't fit the prevailing story. Lower LDL from seed oil consumption is a real, measurable effect. It has not consistently translated into better outcomes when researchers look at interventional trials instead of the observational data that built the seed oil recommendation in the first place.

There's a second thread worth naming here too, the ratio between omega-6 and omega-3 fats in the modern diet, which has climbed from a historical 2 to 1 up toward 20 to 1 in many people's actual intake. High omega-6 without enough omega-3 to balance it is associated with higher inflammatory markers in the research. Wild-caught fish, grass-fed meat, and pasture-raised eggs are among the most reliable whole-food sources of the omega-3 side of that ratio, and they're already how we source the protein on our menu.

The oil in the pan isn't a footnote to the meal. Hyman, Teicholz, and Lugavere all land on the same point from different angles: it's chemically upstream of everything that follows.

What Arrives on Your Tuesday

None of this changes what we do on a Tuesday, because we were already doing it. Extra-virgin olive oil, avocado oil, and coconut oil are the three fats in our kitchen, and they were the three fats in our kitchen long before seed oils became a dinner-table topic. Every dish from our organic meal delivery in San Diego is cooked in those same three oils, and you can see them at work in this week's menu.

Brooke built this kitchen on what she learned cooking her own way back to health, and the oil was part of that from the first day. The seed oil conversation came later, and October gave us a good reason to say it plainly.

With gratitude,
Gio