What Is Erucic Acid in Mustard Oil? And Why Most Brands Never Talk About It

Very few stop to ask a different question:
What variety of mustard seed was used to produce this oil?

The answer matters more than most people realize.

Hidden within mustard seeds is a naturally occurring fatty acid called erucic acid. It has been studied by scientists, discussed by food regulators, and considered by plant breeders for decades. Yet despite its importance, most mustard oil brands rarely mention it.

Why?
Because talking about erucic acid requires going beyond marketing and into the science of what makes one mustard oil different from another.

What Is Erucic Acid?

Erucic acid is a naturally occurring fatty acid found in mustard, rapeseed, and other members of the Brassica family.

Just as mustard oil contains monounsaturated fats (MUFAs), polyunsaturated fats (PUFAs), and saturated fats, it also contains erucic acid. The amount present depends largely on the type of mustard seed used to produce the oil.

This is an important distinction.

Many consumers assume that all mustard oils are essentially the same. In reality, the composition of mustard oil begins with the genetics of the seed itself. Different mustard varieties can produce oils with significantly different erucic acid levels.

In other words, two bottles may both say "mustard oil," but they may not begin with the same crop.

Why Has Erucic Acid Been Studied?

Over the past several decades, researchers around the world have taken a closer look at the composition of edible oils.

As food science evolved, scientists began examining individual fatty acids and their role in food quality and nutrition. Erucic acid became one of the many components that attracted attention.

This research encouraged the development of low-erucic-acid varieties of rapeseed and mustard in several parts of the world. International standards and regulations also evolved as food authorities worked to better understand the composition of edible oils.

Today, consumers routinely compare foods based on sugar content, protein levels, fibre, additives, and processing methods. Increasingly, some are also becoming interested in understanding the fatty acid composition of the oils they use every day.

Why Consumers Are Hearing More About It Today

Food conversations have changed significantly over the past decade.

Consumers who once focused primarily on taste and price now pay closer attention to ingredients, sourcing, processing methods, and nutritional composition.

People want to know where their food comes from and how it is produced.

As awareness grows, consumers are becoming more interested in understanding what is actually present in the foods they consume regularly. Erucic acid has become part of that broader conversation around transparency and informed food choices.

Why Low-Erucic-Acid Varieties Were Developed

As researchers and regulators around the world studied edible oil composition, interest grew in mustard and rapeseed varieties with naturally lower erucic acid levels.

This encouraged plant breeders to develop new cultivars that could provide farmers and food producers with additional options while preserving many of the characteristics valued in traditional mustard crops.

The rise of low-erucic-acid mustard oil is closely linked to these advances in agricultural science and plant breeding.

What many consumers see today as a bottle of oil is often the result of decades of work taking place at the seed level.

Why Don't Most Brands Talk About It?

The simple answer is that most consumers have never heard of it.

The mustard oil conversation in India has traditionally revolved around taste, tradition, and extraction methods. Terms such as "kachi ghani" and "cold pressed" are familiar to many households.

But very few brands discuss what happens before the oil reaches the press.

The seed itself is often overlooked.

Discussing erucic acid means discussing seed varieties, agricultural practices, breeding programs, and food composition. These topics are less visible than packaging claims, yet they play a significant role in determining the characteristics of the final oil.

As consumers become more informed, however, that is beginning to change.

Not All Mustard Seeds Are Created Equal

One of the most important developments in the mustard oil industry has taken place at the agricultural level.

Plant breeders have spent years identifying and developing mustard varieties with naturally lower erucic acid content. These varieties allow farmers and producers to create oils with different fatty acid compositions while preserving the distinctive flavour profile that mustard oil is known for.

This means that the quality of an oil does not begin in the bottle.
It begins with the seed.

The seed chosen by a farmer today influences the composition of the oil that reaches a consumer months later.

Yet very few brands tell that story.

Farmili's Approach Starts at the Seed

At Farmili, we believe that transparency begins long before the oil is extracted.

Our mustard oil starts with carefully selected low-erucic-acid mustard seed varieties grown on our family-managed farmland in Panipat, Haryana.

Because we are involved in the growing process itself, seed selection is not simply a sourcing decision. It is one of the earliest quality decisions we make each season.

These varieties are chosen because they naturally produce oil with lower erucic acid levels compared with many traditional mustard varieties, while still retaining the flavour and character that mustard oil is known for.

For us, the focus is not simply on how the oil is pressed. It is on the entire journey, from seed selection and cultivation to extraction and bottling.

By beginning with thoughtfully selected mustard genetics, we are able to produce mustard oil that reflects both traditional farming knowledge and modern agricultural advancements.

This approach remains relatively uncommon in India, where conversations about mustard oil often focus on processing methods rather than the characteristics of the crop itself.

We believe consumers deserve to understand both.

A New Generation of Mustard Oil

Today's consumers are asking better questions about food.

Where was it grown?
How was it produced?
What makes one product different from another?

The future of food transparency lies in answering these questions honestly.

For mustard oil, that means looking beyond colour, aroma, and marketing claims. It means understanding the role of seed selection, farming practices, and oil composition.

Erucic acid is just one part of that conversation, but it is an important one.

The more consumers understand about the foods they buy, the better equipped they are to make choices that align with their preferences and values.

Looking Beyond the Label

For generations, mustard oil has held a respected place in Indian kitchens. That heritage deserves appreciation.

At the same time, consumers today have access to more information than ever before. They are increasingly interested not just in how food tastes, but in how it is grown, sourced, and produced.

Understanding erucic acid is part of that broader journey toward transparency.

It remains a topic that receives far less attention than flavour, extraction methods, or packaging claims.

At Farmili, we believe the conversation is worth having.

The next time you pick up a bottle of mustard oil, look beyond the label.

Ask where the seed came from.
Ask how it was grown.
Ask what makes it different.

Those questions often reveal more about the oil than the packaging ever can.