The question of whether you can drink buttermilk raw hinges entirely on the type of buttermilk you are consuming. The buttermilk available in grocery stores is not truly "raw" in the unsafe sense and is perfectly safe for consumption straight from the carton. However, traditional buttermilk, the byproduct of churning butter from unpasteurized cream, carries significant health risks and is not recommended for consumption.
Modern Cultured Buttermilk: Safe and Nutritious
Most people today encounter cultured buttermilk, a product made under controlled, sanitary conditions. The process for creating this buttermilk involves several key steps that ensure its safety and quality:
- First, skim or low-fat milk is pasteurized, which involves heating it to a specific temperature for a set time to kill any harmful bacteria. This is the most crucial step for food safety.
- The pasteurized milk is then cooled to a temperature that allows for fermentation.
- A harmless, carefully selected bacterial starter culture, typically Lactococcus lactis, is added to the milk.
- The bacteria ferment the lactose, or milk sugar, into lactic acid, which gives buttermilk its characteristic tangy flavor and thick, creamy texture.
Because this process uses milk that has already been heat-treated, modern cultured buttermilk is safe to consume raw, meaning it does not need to be cooked before drinking. In fact, many people enjoy drinking it plain or mixing it into smoothies. It is a good source of probiotics, calcium, and protein.
Traditional "Raw" Buttermilk: The Dangerous Alternative
Traditional buttermilk is the thin liquid left over after churning butter from cultured cream. Historically, this cream was not pasteurized, meaning the fermentation relied on naturally occurring bacteria. While this is still a practice in some small-scale or non-industrialized settings, it is associated with significant risks due to the potential presence of dangerous pathogens in the original raw milk.
Why traditional raw buttermilk is a health risk
Even when produced under seemingly clean farm conditions, unpasteurized dairy can be contaminated with harmful bacteria from the animal's udder, feces, or equipment. Pasteurization was introduced specifically to combat widespread illness caused by milk contamination. Some of the pathogens that can exist in raw milk include:
- Salmonella: Causes diarrhea, fever, and abdominal cramps.
- E. coli O157:H7: A particularly dangerous strain that can cause severe, sometimes fatal, kidney complications.
- Listeria: Can cause serious illness, especially in pregnant women, newborns, and the elderly.
- Campylobacter: A common cause of foodborne illness that leads to fever and diarrhea.
Because of these risks, regulatory bodies like the FDA and CDC strongly advise against consuming unpasteurized dairy products, including traditional raw buttermilk.
Comparison of Buttermilk Types
To make an informed choice, it is important to understand the key differences between modern cultured buttermilk and traditional raw buttermilk.
| Feature | Modern Cultured Buttermilk | Traditional Raw Buttermilk | 
|---|---|---|
| Source Milk | Pasteurized skim or low-fat milk | Unpasteurized (raw) cream | 
| Production | Controlled fermentation with added bacterial cultures | Byproduct of churning butter from fermented cream | 
| Safety | Considered safe for raw (uncooked) consumption | High risk of carrying dangerous pathogens | 
| Availability | Widely available in supermarkets | Rare in industrial countries, sometimes found at farms or online | 
| Flavor | Tangy and creamy, consistent flavor | Varies based on natural bacteria, often tangier and sometimes thinner | 
| Use | Drinking, cooking, baking | Historically used for drinking, now associated with high risk | 
What about the health benefits?
Some advocates for raw dairy claim it is more nutritious or easier to digest than pasteurized versions, but scientific evidence does not support these claims. The pasteurization process does not significantly diminish the nutritional value of milk, including protein, vitamins, and minerals. Any minor changes to heat-sensitive nutrients are negligible and easily compensated for in a balanced diet. Meanwhile, the healthy bacteria often touted in raw dairy are found in concentrated, safe quantities in modern cultured buttermilk without the associated dangers. For a deep dive into the health benefits of buttermilk, visit Healthline's guide: Is Buttermilk Good for You? Benefits, Risks, and Substitutes.
Conclusion
In summary, the safety of drinking buttermilk "raw" depends on its origin. Modern, store-bought buttermilk is made from pasteurized milk and is safe to consume straight from the bottle, offering several potential health benefits. Conversely, traditional buttermilk derived from unpasteurized milk or cream carries a substantial risk of foodborne illness. To protect your health, always choose commercially available, pasteurized buttermilk. The creamy texture, tangy flavor, and probiotic content can be enjoyed without compromising your safety.
Key Safety Takeaways
- Read the Label: Always choose buttermilk from a trusted supermarket brand to ensure it is the pasteurized, cultured variety.
- Avoid Unpasteurized: Steer clear of any dairy product labeled as "raw" or unpasteurized, as it poses a significant food poisoning risk.
- Buttermilk is Fermented, Not Raw: Remember that modern buttermilk is a fermented product, and the term "raw" in this context refers to drinking it uncooked, not that it is unpasteurized.
- Enjoy Safely: Incorporate store-bought buttermilk into your diet via smoothies, dressings, or baked goods for a healthy and safe addition.
- Trust the Process: The process of pasteurization is a well-established food safety measure designed to protect consumers from pathogens found in untreated milk.