Introduction
Walk into most meal prep kitchens and you’ll find the same thing: giant bottles of vegetable oil, sunflower oil or canola oil.
Why? Because they’re cheap. That’s it.
But here’s the problem: the oils you cook with matter more than you think.
Not just for taste (though that’s part of it) but for inflammation levels, hormone production, recovery and long-term health.
At The Healthy Tiffin Co., we use olive oil and ghee for every single dish. Not because it’s trendy. Because it’s better for you.
In this post, we’ll break down:
- What seed oils are and why they’re problematic
- Why olive oil and ghee are superior choices
- How cooking fats impact your fitness goals
- Why most meal prep companies take shortcuts (and we don’t)
Let’s get into it.
What Are Seed Oils? (And Why Are They Everywhere?)
Seed oils (also called industrial seed oils or vegetable oils) include:
- Canola oil
- Sunflower oil
- Soybean oil
- Corn oil
- Safflower oil
- Cottonseed oil
- Grapeseed oil
- Rice bran oil
Why they’re everywhere:
- They’re cheap to produce (subsidised crops, industrial processing)
- They have a neutral flavour (doesn’t interfere with recipes)
- High smoke point (can withstand high-heat cooking)
- Long shelf life (heavily processed = stable)
Sounds great, right?
Here’s the catch: they’re highly processed, unstable when heated and loaded with omega-6 fatty acids in ratios that promote inflammation.
The Problem with Seed Oils
1. Omega-6 to Omega-3 Ratio Is Completely Off
Your body needs both omega-6 and omega-3 fatty acids. But the ratio matters.
Ideal ratio: 1:1 to 4:1 (omega-6 to omega-3)
Modern Western diet ratio: 15:1 to 20:1
Why this is a problem:
- Excessive omega-6 promotes inflammation
- Inflammation interferes with muscle recovery
- Chronic inflammation is linked to metabolic issues, joint pain and poor cardiovascular health
Seed oils are 50-70% omega-6 fatty acids. When you cook with them daily, you’re tipping the scales toward chronic inflammation.
2. They’re Highly Processed and Chemically Extracted
Unlike olive oil (which is pressed from olives) or ghee (which is clarified butter), seed oils require industrial processing.
The process involves:
- Heating seeds to high temperatures
- Using chemical solvents (like hexane) to extract oil
- Refining, bleaching and deodorising the oil
- Adding synthetic antioxidants to prevent rancidity
By the time it reaches your kitchen, it’s a highly refined product that bears little resemblance to the original seed.
3. They Oxidise Easily When Heated
When seed oils are heated (especially repeatedly, like in restaurant deep fryers), they oxidise and form harmful compounds:
- Lipid peroxides: damage cells and DNA
- Trans fats: increase LDL cholesterol and cardiovascular risk
- Aldehydes: toxic byproducts linked to inflammation
Even at home cooking temperatures, seed oils degrade.
Research published in the Journal of Food Science found that heating sunflower and canola oil to 180°C (standard frying temperature) produced significant levels of toxic aldehydes.
4. They’re Marketed as “Heart-Healthy” Despite Mixed Evidence
For decades, seed oils were promoted as healthier alternatives to saturated fats (like butter and ghee).
The reasoning:
- They lower LDL cholesterol
- Therefore, they must be heart-healthy
The problem:
Lowering LDL doesn’t tell the whole story. What matters is:
- Oxidised LDL (which seed oils may increase)
- Inflammation markers (which seed oils may worsen)
- Overall diet quality (seed oils often appear in ultra-processed foods)
Recent research questions the blanket recommendation to replace saturated fats with seed oils. Some studies suggest they may increase cardiovascular risk when consumed in excess (not decrease it).
Takeaway: The science isn’t settled but there’s enough concern to avoid over-relying on seed oils.
Why We Use Olive Oil Instead
Olive oil (specifically extra virgin olive oil, EVOO) is the gold standard for cooking oils.
1. Monounsaturated Fats (The Good Stuff)
Olive oil is around 70% oleic acid, a monounsaturated fat that:
- Reduces inflammation
- Supports heart health
- Improves insulin sensitivity
- Doesn’t oxidise easily when heated (unlike seed oils)
Evidence: The Mediterranean diet (rich in olive oil) is one of the most studied diets for longevity, cardiovascular health and metabolic health.
2. High in Antioxidants and Polyphenols
Extra virgin olive oil contains:
- Oleocanthal: anti-inflammatory compound (similar effect to ibuprofen)
- Oleuropein: antioxidant that protects cells from damage
- Vitamin E: supports immune function and skin health
These compounds survive cooking.
Research in the Journal of Agricultural and Food Chemistry found that EVOO retains most of its polyphenols even when heated to 180°C.
3. Stable at Cooking Temperatures
Myth: “You can’t cook with olive oil because it has a low smoke point.”
Reality: EVOO’s smoke point is 190-210°C, which is higher than the typical stovetop cooking temperature (160-180°C).
More importantly, smoke point isn’t the only factor. Oxidative stability matters more.
Studies show that olive oil is more stable during cooking than seed oils, producing fewer harmful byproducts.
We use olive oil for:
- Sautéing onions, garlic and ginger
- Cooking vegetables
- Making curries and gravies
- Low to medium-heat cooking
4. Better Flavour
Olive oil has a subtle, fruity flavour that enhances dishes without overpowering them.
Seed oils taste like nothing, which is why they’re used in mass production. But “neutral” isn’t the same as “good.”
Olive oil adds depth.
Why We Use Ghee for High-Heat Cooking and Flavour
Ghee (clarified butter) is a staple in Indian cooking. And for good reason.
1. High Smoke Point (250°C)
Ghee is made by simmering butter to remove water and milk solids, leaving pure butterfat.
Result: A smoke point of 250°C, making it one of the most heat-stable cooking fats.
We use ghee for:
- Tempering spices (high-heat blooming)
- Searing chicken or paneer
- Finishing dishes for richness
2. Rich in Butyrate (Gut Health Superstar)
Ghee contains butyric acid, a short-chain fatty acid that:
- Supports gut lining integrity
- Reduces inflammation in the digestive tract
- May improve insulin sensitivity
If you’re eating high protein and training hard, gut health matters. Ghee supports it.
3. Contains Fat-Soluble Vitamins
Ghee is a source of:
- Vitamin A: immune function, skin health
- Vitamin D: bone health, hormone production
- Vitamin K2: bone and cardiovascular health
These vitamins are better absorbed when consumed with fat. Ghee provides both the vitamins and the fat.
4. Lactose and Casein-Free
Even if you’re lactose intolerant, ghee is usually fine. The clarification process removes milk solids (lactose and casein), leaving pure fat.
5. Authentic Indian Flavour
Let’s be honest. Ghee just tastes better.
It adds a rich, nutty, slightly caramelised flavour that you can’t replicate with neutral seed oils.
When we temper cumin seeds in ghee for dal or finish a curry with a drizzle of ghee, it’s the difference between “this is decent” and “this tastes like home.”
How Cooking Fats Impact Your Fitness Goals
You might think: “Does it really matter if I’m hitting my macros?”
Yes. Here’s why.
1. Inflammation Affects Recovery
High omega-6 intake from seed oils increases inflammatory markers.
What that means for you:
- Slower muscle recovery
- More joint pain
- Reduced training capacity
- Higher injury risk
Switching to olive oil and ghee reduces inflammation, supporting faster recovery and better performance.
2. Hormone Production Needs Quality Fats
Testosterone, growth hormone and other anabolic hormones are synthesised from cholesterol and fats.
Low-fat diets tank testosterone. But the type of fat matters too.
Monounsaturated fats (from olive oil) and saturated fats (from ghee) support healthy hormone production better than polyunsaturated fats from seed oils.
3. Nutrient Absorption Depends on Fat Quality
Vitamins A, D, E and K are fat-soluble. If you’re eating spinach (in Palak Chicken, for example) but cooking it in poor-quality oil, you’re not absorbing those vitamins as effectively.
Olive oil and ghee improve bioavailability of fat-soluble vitamins and antioxidants.
Why Most Meal Prep Companies Use Seed Oils (And We Don’t)
Let’s be blunt: seed oils are cheaper.
Cost comparison (per litre):
- Canola oil: £3-5
- Sunflower oil: £4-6
- Extra virgin olive oil: £10-15
- Grass-fed ghee: £15-20
When you’re running a meal prep business at scale, using seed oils instead of olive oil and ghee can save thousands of pounds per year.
But here’s the thing:
We didn’t start The Healthy Tiffin Co. to cut corners. We started it to make food that’s actually good for you. Food that supports your goals without compromising on quality.
That means:
- No cheap seed oils
- No generic curry powder
- No factory-farmed meat
- No shortcuts
It costs more. It’s worth it.
How to Tell If a Meal Prep Company Is Using Seed Oils
Look for these red flags:
- They don’t specify which oils they use. If it just says “cooked in vegetable oil,” assume seed oils
- Extremely low prices. Quality fats cost money. If it’s suspiciously cheap, they’re cutting costs somewhere
- Generic, mass-produced flavour. Seed oils taste like nothing. If the food tastes bland despite being “spiced,” they’re probably using cheap oil and spice blends
- No transparency on sourcing. Companies proud of using olive oil and ghee will tell you
At THT Co., we’re transparent:
- Extra virgin olive oil for sautéing and curries
- Grass-fed ghee for tempering and finishing
- No seed oils, ever
It’s listed on our website. It’s not a secret.
Can You Still Eat Seed Oils Sometimes? (The Nuance)
Let’s be realistic: you’re going to eat seed oils occasionally.
They’re in:
- Restaurant food
- Packaged snacks
- Takeaways
- Baked goods
That’s fine. Occasional exposure won’t ruin your health.
The issue is chronic, daily consumption.
If you’re cooking with seed oils at home, meal prepping with them AND eating out regularly, you’re consuming them in nearly every meal.
That’s when problems arise.
Our approach:
- Control what you can control (your regular meals)
- Choose quality fats at home and in meal prep
- Don’t stress about occasional seed oil exposure when eating out
The Practical Takeaway
If you care about:
- Reducing inflammation
- Supporting recovery and muscle growth
- Eating food that tastes good
- Long-term health
Then the fats you cook with matter.
Olive oil and ghee aren’t just better. They’re what traditional, healthy cuisines have used for centuries.
You don’t need to be perfect. But you should know what’s going into your food.
At The Healthy Tiffin Co., we’re committed to using real, quality ingredients (including the oils and fats we cook with).
No seed oils. No shortcuts. Just food done properly.
Ready to Eat Meal Prep That’s Actually Made with Quality Ingredients?
Every dish at The Healthy Tiffin Co. is cooked with extra virgin olive oil and grass-fed ghee. Never seed oils.
Properly spiced. Macro-tracked. Better for you.
Order your first week and taste the difference →
References:
- Maillard, V., et al. (2019). “Dietary fatty acids and cardiovascular health.” Journal of Clinical Lipidology.
- Alves, J., et al. (2020). “Oxidative stability of cooking oils.” Journal of Food Science.
- Santangelo, C., et al. (2016). “Polyphenols and oxidative stress in olive oil.” Journal of Agricultural and Food Chemistry.
Disclaimer: This content is for informational purposes only and does not constitute medical advice. Consult a healthcare professional before making significant dietary changes.