Buttermilk - a by-product of butter production, low in fat but retaining protein, calcium and probiotics.

Below is the detailed nutritional value per 100 grams buttermilk.
| Nutrient | Amount (100 g) | % RDA |
|---|---|---|
| 🔥 Calories (Energy) | 40 kcal | -- |
| 💪 Protein | 3.3 g | -- |
| 🧈 Fats | 0.9 g | -- |
| 🍚 Carbohydrates | 4.8 g | -- |
| 🌾 Fiber | 0 g | -- |
| Calcium | 116 mg | 12% |
| Phosphorus | 90 mg | 13% |
| Vitamin B12 | 0.3 µg | 13% |
| Potassium | 151 mg | 4% |
| Riboflavin (B2) | 0.15 mg | 14% |
* RDA - Recommended Daily Allowance (EU Regulation 1169/2011). Percentages are calculated for an adult. Athletes' needs may be higher.
Here are the main buttermilk benefits in an athlete's nutrition:
The best ways to prepare buttermilk, while preserving maximum nutritional value:
After training - rehydration. At any time.
Best alternatives buttermilk:
Kefir, skim milk, plant milk, coconut water
Buttermilk — a sour milk drink obtained by making butter or fermented milk. It comes in two types: traditional (fattier, slightly thicker) and "lean" (almost fat-free, light). Due to their sour taste and liquid consistency, they are easier to digest than full-fat milk, which is convenient after training or on a hot day.
Kefir and buttermilk differ: kefir has more live fermentation cultures and is thicker; buttermilk is more liquid and lower in calories.
| Metric | Lean buttermilk | Traditional |
|---|---|---|
| Calories | ~35 kcal | ~40–60 kcal |
| Protein | ~3 g | ~3 g |
| Fat | 0,1–0,5 g | 1–3 g |
| Carbohydrates | ~4–5 g | ~4–5 g |
| Calcium | ~110 mg | ~110 mg |
The exact amount depends on the manufacturer — check the calories the calorie search.