Is Cultured Buttermilk Keto?

Fermented Dairy
Cultured Buttermilk sticker illustration
KETO VERDICTMODERATE

Cultured buttermilk has ~4.8g net carbs per 100g, so it’s a sometimes keto choice. It brings probiotics and a tangy kick, but keep portions small—better as a cooking ingredient or functional splash than a full glass.

Cultured buttermilk has ~4.8g net carbs per 100g, so it’s a sometimes keto choice. It brings probiotics and a tangy kick, but keep portions small—better as a cooking ingredient or functional splash than a full glass.

  • Net carbs (100g)4.8g
  • Protein (100g)3.3g
  • Fat (100g)2.2g
  • Keto verdictEnjoy in moderation

NUTRITION FACTS

Per 100g (raw)

Net Carbs
4.8g
Total Carbs
4.8g
Fiber
0g
Protein
3.3g
Fat
2.2g
Calories
49

Source: USDA FoodData Central

HOW TO ENJOY IT ON KETO

  • Manageable at 4.8g net carbs per 100g with careful portion control
  • Provides live lactic acid bacteria that may support a healthy gut
  • Tangy flavor boosts dishes without added sugar
  • Fermentation reduces some lactose compared to regular milk
  • Small amounts deliver big culinary impact in dressings and marinades
  • Offers modest protein that can aid satiety in recipes

HEALTH BENEFITS

  • Source of probiotics that can support digestive health
  • Calcium contributes to bone and dental health
  • Contains phosphorus to assist bone mineralization
  • Vitamin B12 supports energy metabolism and nervous system function
  • Fermentation may improve lactose tolerance for some individuals
  • Riboflavin (B2) supports cellular energy and antioxidant function
  • A diverse microbiome can help immune function
  • Some evidence links fermented dairy to healthier blood pressure and lipids

PREPARATION SUGGESTIONS

KETO RANCH DRESSING

Whisk 2–3 tbsp cultured buttermilk with mayonnaise, dill, chives, garlic powder, onion powder, and black pepper for a tangy, probiotic-rich dressing.

TENDERIZING MARINADE

Marinate chicken, pork, or beef 2–4 hours with cultured buttermilk, paprika, garlic, and herbs; lactic acid gently tenderizes without added carbs.

KETO BAKING INGREDIENT

Add 2–3 tbsp to almond- or coconut-flour batters for moisture and tang—great in savory biscuits or muffins.

CREAMY SOUP BASE

Stir 50–100 ml into pureed broccoli or cauliflower soup for creaminess and zip; warm gently to preserve cultures.

PROBIOTIC SMOOTHIE

Blend a small splash with avocado, spinach, MCT oil, and a few raspberries or strawberries for flavor while keeping carbs in check.

MASHED CAULIFLOWER ENHANCER

Fold 2–3 tbsp into mashed cauliflower with butter and herbs for a sour-cream-like tang.