What exactly is in the oil I’m using? And what happens to it before it reaches my kitchen?
You Cooking oil is one of the most used ingredients in your kitchen. You use it every day - frying, sautéing, preparing meals for your family. But very few people stop to ask: "What exactly is in the oil I’m using? And what happens to it before it reaches my kitchen?
What Happens to Most Cooking Oils Before You Buy Them
Many commercially available oils go through multiple processing steps before they are packaged:
- High heat extraction
- Refining (to remove impurities)
- Bleaching (to improve color)
- Deodorizing (to remove natural smell)
These processes are designed to:
- Extend shelf life
- Create a uniform appearance and taste
- Allow large-scale production
However, they also change the natural structure of the oil. According to the American Oil Chemists' Society, refining involves heat and chemical treatments that remove not only unwanted compounds, but also some naturally occurring components in the oil.
Why Processing Matters When You Cook
Cooking oil is not just something you add - it’s something you heat. And when oil is exposed to high temperatures:
- Its stability becomes important
- It may begin to break down
- It can produce smoke and degradation compounds
Research published by the World Health Organization and Food and Agriculture Organization highlights that oils exposed to repeated high heat can form oxidation products, which affect both quality and safety.
👉 In practical terms, this shows up as:
- Excess smoke when cooking
- Off-flavors
- Reduced cooking performance
What “Cold-Pressed” Really Means
Cold-pressed oils are produced differently. Instead of going through heavy refining, the oil is:
- Mechanically pressed from the raw ingredient
- Filtered to remove particles
- Left closer to its natural state
This means:
- No chemical refining steps
- Minimal heat exposure
- More of the oil’s original characteristics are retained
According to the European Food Safety Authority, minimally processed oils retain more of their naturally occurring compounds compared to highly refined oils.
Why Many Households Are Switching
For people who cook often, small differences matter. Families choosing less processed oils often report:
- More consistent cooking
- Lower smoke during frying
- Better taste retention
It’s not about making dramatic changes overnight. It’s about paying attention to something you use every single day.
It’s Not About Fear - It’s About Awareness
This is important. Not all processed oils are “bad,” and not all cold-pressed oils are automatically “better” in every situation.
But there is a clear difference in how they are made—and that difference affects:
- How the oil behaves when heated
- What remains in the oil after processing
- The overall cooking experience
So What Should You Look For?
If you cook regularly, it’s worth paying attention to:
- How the oil is processed
- How it behaves when heated (smoke, stability)
- Whether it fits your cooking habits
Small daily choices, repeated over time, make a difference.
A Simpler Approach
At Mosoro, we produce groundnut oil using a simple process:
- Pressing groundnuts
- Filtering the oil
- Supplying it fresh
No refining. No chemical processing.
The goal is not complexity - it’s clarity and consistency.
Final Thought
Cooking oil is not used once in a while. It’s used every day. And when something is used daily, it’s worth understanding it a little better.
References & Sources
- World Health Organization / Food and Agriculture Organization – Fats and Fatty Acids in Human Nutrition Report
- American Oil Chemists' Society – Oil processing and refining standards
- European Food Safety Authority – Scientific opinions on dietary fats and processing
- Choe, E., & Min, D.B. (2007). Chemistry of deep-fat frying oils. Journal of Food Science