Grass-Fed Butter vs Grain-Fed Butter: Taste, Colour and Nutrition

Grass-fed butter and grain-fed butter can differ in colour, flavour, texture and fatty-acid composition, but the labels are often misunderstood. Dairy cow feeding systems are rarely as simple as “only grass” versus “only grain”. Many herds receive a mixture of pasture, conserved forage and supplementary feed.

The term grass-fed can also mean different things in different countries or certification programmes. A New Zealand dairy product is not automatically certified grass-fed simply because it was made in New Zealand.

This guide explains what grass-fed and grain-fed butter usually mean, what New Zealand’s official grass-fed dairy standard requires, how feeding systems may affect butter, and what the difference means for cooking and baking.

Grass-Fed Butter vs Grain-Fed Butter at a Glance

These are general tendencies rather than guaranteed differences. Butter characteristics also depend on season, cow breed, milk composition, butterfat percentage, cream handling, culturing, churning, salting and storage.

What Does Grass-Fed Butter Mean?

Grass-fed butter is butter made from milk supplied by cows whose diets meet a stated grass or forage requirement.

Depending on the country or certification programme, recognised feed may include:

• Fresh pasture
• Grass
• Legumes such as clover
• Hay
• Grass silage
• Other approved forage crops

Grass-fed does not always mean that a cow eats fresh green grass every day of the year. Seasonal conditions, animal health, weather and pasture availability may require conserved forage or supplementary feed.

The important questions are:

• Which standard defines the claim?
• What percentage of the diet must come from grass or forage?
• Does the standard require pasture access?
• Is the claim independently verified?
• Does the claim apply to the exact butter being purchased?

What Does Grain-Fed Butter Mean?

Grain-fed butter is not always an official or consistently regulated category.

It is commonly used to describe butter made from milk produced in systems where cows receive a greater proportion of:

• Grain
• Maize silage
• Soy-based feed
• Protein concentrates
• Commercial supplementary feed
• Total mixed ration, often abbreviated to TMR

This does not necessarily mean that the cows eat no grass. A farm may use pasture for part of the day or year and provide grain or conserved feed at other times.

Feeding systems exist on a spectrum. Terms such as grass-fed, pasture-based, mixed ration and grain-fed are useful summaries, but they do not describe every part of a dairy cow’s diet.

What Is New Zealand’s Official Grass-Fed Dairy Standard?

New Zealand’s Ministry for Primary Industries has developed a voluntary administrative standard that defines when dairy animals can be described as grass-fed under an approved scheme.

Under the New Zealand dairy grass-fed standard:

• Recognised types of grass must make up, on average, at least 90% of the diet of dairy animals supplying the relevant milk pool.
• The animals must have access to pasture for at least 340 days of the year.
• Pasture access must be available for at least eight hours per day on those days.
• Temporary removal from pasture may be allowed for animal management, adverse weather or environmental protection.

The standard is voluntary. It gives businesses a recognised framework for supporting a New Zealand grass-fed claim, but it does not mean that every New Zealand dairy ingredient automatically meets the standard.

A food brand should therefore obtain current supplier documentation before describing a specific butter, cookie or other product as certified grass-fed.

Read the New Zealand grass-fed administrative standards

Is New Zealand Butter Automatically Grass-Fed?

No.

New Zealand has a strong pasture-based dairy system, supported by a temperate climate and extensive grazing practices. However, geographic origin and verified grass-fed status are not the same claim.

A label that says New Zealand butter tells you where the butter comes from. It does not, by itself, prove:

• The exact proportion of grass in the cows’ diet
• The number of days the cows had pasture access
• Compliance with a specific grass-fed programme
• Independent certification
• That no supplementary feed was used

When grass-fed status matters to you, look for a clear supplier claim, certification or standard rather than relying only on country of origin.

Does Grass Feeding Make Butter More Yellow?

It can.

Pasture contains carotenoids, including beta-carotene. Some of these naturally occurring pigments can transfer into milk fat and contribute to a more yellow butter colour.

Research comparing pasture and indoor feeding systems has found that higher pasture allowance can be associated with more yellow butter and higher levels of certain carotenoids.

However, butter colour is also affected by:

• Season
• Pasture species
• Cow breed
• Stage of lactation
• Feed supplements
• Butter composition
• Processing and storage

A deeper yellow colour may be consistent with greater pasture intake, but colour alone cannot prove that butter is grass-fed, certified, healthier or better quality.

Does Grass-Fed Butter Taste Better?

That depends on the butter and the person tasting it.

Feeding systems can affect milk-fat composition and some aroma compounds. In controlled research, consumers have sometimes rated the flavour, appearance and colour of pasture-derived butter more highly than butter produced from an indoor total mixed ration.

That does not mean grass-fed butter wins every blind tasting.

Butter flavour is also strongly influenced by:

• Whether the cream is cultured
• Freshness
• Salt level
• Milk quality
• Butterfat percentage
• Churning and washing
• Storage temperature

Some people prefer a stronger, more seasonal dairy character. Others prefer a mild, consistent butter. Taste remains a preference, which is irritatingly resistant to marketing departments declaring a unanimous winner.

Is Grass-Fed Butter Healthier?

Grass-based feeding can change the composition of milk fat. Studies have found that greater pasture allowance may be associated with differences in:

• Alpha-linolenic acid, an omega-3 fatty acid
• Conjugated linoleic acid
• Other unsaturated fatty acids
• Beta-carotene and related pigments
• Some fat-soluble compounds

These are measurable compositional differences. They should not be exaggerated into medical promises.

Butter remains:

• A concentrated source of energy
• High in total fat
• High in saturated fat
• A food normally eaten in relatively small amounts

Grass-fed butter should not be described as a heart-health treatment, an anti-inflammatory food, an immunity booster or a major source of omega-3 without specific evidence and appropriate context.

The difference between two butters may be scientifically interesting without turning either one into medicine. Humanity can apparently enjoy food only after attempting to promote it into a treatment plan.

Grass-Fed Butter and Cultured Butter Are Not the Same Thing

These terms describe two different parts of butter production.

• Grass-fed describes how the dairy cows were fed.
• Cultured butter describes how the cream was prepared before churning.

Cultured butter is made by allowing selected cultures to develop flavour in the cream before it is churned. This can create a more complex, lightly tangy or rounded dairy flavour.

Butter can be:

• Grass-fed and cultured
• Grass-fed and sweet-cream
• Mixed-feed and cultured
• Mixed-feed and sweet-cream

One term does not prove the other.

Learn how cultured butter differs from regular butter

Does Grass-Fed Butter Behave Differently in Baking?

It can, although the difference may be subtle and product-specific.

Changes in fatty-acid composition can affect:

• Butter hardness
• Softening at room temperature
• Crystallisation
• Melting behaviour
• How easily butter creams with sugar
• Dough spread

Some research has found that butter produced with greater pasture allowance was softer and had different crystallisation behaviour than butter from total mixed ration systems.

However, feeding system is only one variable. In baking, results also depend on:

• Butterfat and water content
• Butter temperature
• Whether the butter is salted
• Flour type
• Sugar type
• Starch
• Mixing
• Dough temperature
• Baking conditions

Do not assume that changing to grass-fed butter will automatically improve every cookie or pastry recipe. Test the butter in the actual recipe instead of expecting the cow’s menu to complete the entire baking process unaided.

Does Grass-Fed Butter Make Cookies Melt in the Mouth?

Not by itself.

A delicate melt-in-the-mouth cookie texture comes from the complete recipe and structure, including:

• The total butter percentage
• The balance of flour and starch
• The type of sugar
• Moisture
• Mixing and shaping
• Cookie thickness
• Baking conditions

Butter contributes flavour, richness and tenderness, but the cows’ feeding system alone cannot explain the final texture.

Explore the science behind melt-in-the-mouth cookies

How to Read a Grass-Fed Butter Label

Before buying a butter marketed as grass-fed, check:

1. The exact wording: Does it say grass-fed, pasture-fed, predominantly grass-fed or simply New Zealand butter?
2. The standard: Is a recognised certification or supplier programme named?
3. The diet threshold: Does the claim explain how much of the diet comes from grass or forage?
4. Pasture access: Does the standard require the cows to graze outdoors?
5. Verification: Is the claim independently audited or documented?
6. The product scope: Does the claim apply to that exact butter and production batch?
7. Other information: Is the butter cultured, salted or unsalted, and what is its butterfat content?

Terms such as natural, premium, pasture inspired or packaging covered in green fields do not replace a clear grass-fed claim.

What Can Lowrey Accurately Say About Its Butter?

Lowrey Butter Cookies are made with New Zealand cultured butter.

Depending on the flavour, Lowrey Butter Cookies contain approximately 42% to 44% butter. The Original recipe uses New Zealand cultured butter, wheat flour, corn starch and icing sugar.

The cookies are made in New Zealand and designed to have a delicate, short, melt-in-the-mouth texture rather than a hard, strongly crunchy bite.

These are separate product facts:

• New Zealand butter describes the butter’s origin.
• Cultured butter describes the treatment of the cream.
• 42%–44% butter describes the amount used in the cookie recipe, depending on flavour.
• Grass-fed would describe the dairy feeding system and requires suitable supplier support.

Unless current supplier documentation confirms that the exact butter meets a recognised grass-fed standard or programme, Lowrey should not treat New Zealand origin alone as proof of certified grass-fed status.

The butter’s flavour and the overall recipe both contribute to the finished cookie. The melt-in-the-mouth texture should not be attributed to one feeding claim alone.

Frequently Asked Questions

Is grass-fed butter made from cows that eat only fresh grass?

Not necessarily. The definition depends on the standard. Recognised feed may include fresh pasture, hay, silage and other approved forage. Some standards also permit limited supplementary feed.

Is grain-fed butter made from cows that never eat grass?

No. Many dairy systems combine pasture, silage, grain and supplementary feed. Grain-fed is often an informal description rather than a precise statement that the cows consume no grass.

Is all New Zealand butter grass-fed?

No. New Zealand has a strongly pasture-based dairy system, but a New Zealand origin statement does not automatically prove compliance with the official grass-fed dairy standard.

What does New Zealand’s grass-fed dairy standard require?

Under the voluntary MPI standard, recognised grass types must provide, on average, at least 90% of the diet of animals supplying the milk pool. The cows must also have pasture access for at least 340 days per year and at least eight hours per day.

Why is some grass-fed butter more yellow?

Pasture can provide carotenoids that contribute yellow pigments to milk fat. Season, breed, feed, processing and storage also affect butter colour, so colour alone is not proof of grass-fed status.

Does grass-fed butter contain more omega-3?

Greater pasture intake can be associated with a higher proportion of certain omega-3 and other unsaturated fatty acids in milk fat. The exact amount varies, and butter is not normally a major omega-3 food.

Is grass-fed butter healthier than grain-fed butter?

It may have a different fatty-acid and carotenoid profile, but both remain concentrated dairy fats high in saturated fat. The difference should not be turned into a guaranteed health claim.

Does grass-fed butter taste better?

Some people prefer the flavour, colour or texture of pasture-derived butter. Others prefer a milder butter. Taste also depends on culturing, salt, freshness, butterfat and processing.

Is cultured butter always grass-fed?

No. Cultured describes fermentation of the cream. Grass-fed describes the dairy cows’ diet. A butter may be cultured without being grass-fed, or grass-fed without being cultured.

Is grass-fed butter better for baking?

Not automatically. It may differ in hardness or melting behaviour, but recipe performance depends on butterfat, water content, temperature and the complete formula. Testing is more reliable than relying on the label alone.

Does Lowrey use certified grass-fed butter?

Lowrey uses New Zealand cultured butter. A certified or standard-compliant grass-fed claim should only be made when supported by current documentation for the exact butter supplied.

The Bottom Line

Grass-fed and grain-fed butter can differ because the dairy cows receive different proportions of pasture, forage, grain and supplementary feed.

Greater pasture intake may influence butter colour, fatty-acid composition, hardness, melting behaviour and flavour. However, the differences vary, and they do not make grass-fed butter automatically healthier, tastier or better for every recipe.

New Zealand now has a clear voluntary grass-fed dairy standard. A qualifying scheme requires at least 90% recognised grass in the average diet, along with substantial pasture access. That standard is more meaningful than simply assuming every New Zealand dairy product is certified grass-fed.

For cookies, butter origin, butter type, total butter percentage and the rest of the recipe all matter. Lowrey uses New Zealand cultured butter and approximately 42%–44% butter depending on the flavour, but the product’s delicate texture comes from the complete formula rather than one feeding claim.

This article provides general food information and is not medical advice. Feeding systems, butter composition and product claims vary. Check current supplier documentation and product labels before relying on a grass-fed claim.

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Sources and Further Reading

• New Zealand Ministry for Primary Industries: Grass-Fed Administrative Standards
• Journal of Dairy Science: Pasture Feeding and Butter Composition and Functional Properties
• Journal of Dairy Science: Butter from Pasture versus Indoor Feeding Systems

Continue Exploring Lowrey

• Explore Lowrey Butter Cookie gift tins
• Learn how to identify quality butter cookies
• Compare cultured butter and regular butter
• Learn what creates a melt-in-the-mouth cookie texture
• Read why Lowrey uses cultured butter