Cultured butter is excellent for keto: ~0.1g net carbs per 100g and ~82g fat make it a near-pure fat. The culturing step adds a tangy flavor; some brands include live cultures, but many finished butters contain few or no probiotics—check labels if this matters.
Is Cultured Butter Keto?

Cultured butter is excellent for keto: ~0.1g net carbs per 100g and ~82g fat make it a near-pure fat. The culturing step adds a tangy flavor; some brands include live cultures, but many finished butters contain few or no probiotics—check labels if this matters.
- Net carbs (100g)0.1g
- Protein (100g)0.9g
- Fat (100g)81.7g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Source: Nutritional databases and food labels
WHY IT'S KETO-FRIENDLY
- Ultra-low net carbs: ~0.1g per 100g keeps ketosis on track
- High fat content supports ketone production and satiety
- Culturing adds flavor complexity; some products retain live cultures (verify on label)
- Rich in fat-soluble vitamins (A, D, E, K2—often higher in grass-fed)
- Minimal lactose compared to other dairy fats
- Versatile: ideal for sauces, pan-finishing, and topping low-carb vegetables
HEALTH BENEFITS
- Provides butyric acid (butyrate), which supports colon health
- Fat-soluble vitamins aid vision, bone health, and immunity
- CLA in grass-fed butter may support healthy body composition
- Dietary fat helps absorption of fat-soluble nutrients in meals
- Can improve meal satisfaction, supporting appetite control on keto
- When sourced grass-fed, may offer a more favorable micronutrient profile
PREPARATION SUGGESTIONS
COMPOUND BUTTER
Mash with herbs, garlic, or lemon zest; chill and slice over steaks, fish, or veggies for a chef-y finish.
BUTTER COFFEE
Blend a small pat with mct-oil into black coffee for a creamy, high-fat morning option.
PAN COOKING
Use for gentle sautéing or finish seared meats and vegetables for gloss and flavor.
HOLLANDAISE BASE
Whisk into egg yolks and lemon for a classic hollandaise to pair with eggs-whole and asparagus.
VEGETABLE TOPPING
Melt over steamed broccoli, zucchini, or cauliflower; finish with sea salt and fresh herbs.
SAUCE MAKING
Emulsify into pan sauces or gravies to add body, sheen, and rich mouthfeel.