Grass-fed butter

Butter is the fat we cook everything in. It is stable at pan temperature, it carries the fat-soluble vitamins from pasture, and it does not oxidise into the aldehydes that seed oils throw off when heated.

Grass-fed matters here more than for most foods, because butter is concentrated milk fat and everything the cow ate is concentrated with it.

  • Daily, as the cooking fat
  • 3 recipes
  • Dairy fat
  • Updated Sep 2026

What it supplies

Nutrient · per 100 g (about 7 tablespoons) Amount % DV Relative amount
Fat 81 g 104%
Saturated fat 51 g 255%
Vitamin A 684 mcg 76%
Vitamin E 2.3 mg 15%
Vitamin K 7 mcg 6%

Source: USDA FoodData Central.Percent Daily Values are based on adult reference intakes. The bars stop at 100%; the numbers do not.

Why it works

Saturated and monounsaturated fat make up more than 90% of butter, so it does not push the body's fat stores toward polyunsaturated fat the way seed oils do over years. Retinol supports steroid hormone synthesis directly; K2 routes calcium into bone and away from arteries.

Cooking in butter also displaces the vegetable oil that would otherwise be in the pan, which is where most of the benefit lives.

How much, how often

  • 2–4 tbsp

    Daily, as the cooking fat

    Replaces the seed oil that would otherwise be in the pan — that is most of the benefit.

  • Deep yellow

    The pasture tell

    Colour comes from beta-carotene, which comes from grass.

How to buy and prepare it

Look for deep yellow colour and the words grass-fed or pasture on the label; Irish, New Zealand and Dutch butters are usually pasture-raised by default. Salted butter keeps longer; unsalted is for baking. Cultured butter has been fermented and tastes more of something.

Ghee is butter with the milk solids removed — fine for high heat and for people who react to dairy protein, though it loses the butyrate.

For pan cooking, medium heat is the ceiling; above it the milk solids brown and then burn. For searing, use tallow and finish with butter. Butter, salt and a hot potato is a meal that needs no recipe.

Butter keeps two weeks at room temperature in a covered dish, months in the fridge and a year frozen. Keep it away from strong-smelling food; the fat picks up odours.

Recipes that use it

In these guides

Questions

How much butter a day?
Two to four tablespoons, mostly as the cooking fat, is normal on this diet. There is no upper limit worth worrying about short of it displacing protein.
Does grass-fed really matter?
For butter, yes. Vitamin K2, carotene and the fat profile all track what the cow ate, and butter is the most concentrated form of that fat. For lean beef it matters less.
Butter or ghee?
Butter for everyday cooking and for its butyrate; ghee for very high heat or if milk protein bothers you.