Is Sour cream Keto?
Yes, sour cream is generally considered keto-friendly. Its high fat content and low carbohydrate count make it a staple ingredient for those following a ketogenic diet. In this article, we will break down the specific ingredients found in standard sour cream to confirm there are no hidden sugars or additives that could kick you out of ketosis.
The Ingredient Breakdown
When evaluating a dairy product for the ketogenic diet, the primary concern is the presence of added sugars or thickeners that increase the net carb count. Fortunately, traditional sour cream relies on a very simple, natural process.
The core ingredients in standard sour cream are cultured pasteurized cream and enzymes. The 'culturing' process is crucial here. Bacterial cultures are introduced to the cream, which ferment the lactose (milk sugar) into lactic acid. This fermentation is what gives sour cream its tangy flavor and thick texture, but more importantly, it significantly reduces the sugar content naturally.
We also see enzymes including lactase listed. Lactase is the enzyme that breaks down lactose. In the context of sour cream production, this ensures the texture remains smooth and prevents crystallization. For a keto dieter, this is a positive sign, as it indicates a focus on breaking down sugars rather than adding them.
There are no red flags in this ingredient list. You won't find corn syrup, modified starches, or maltodextrin—common culprits that spike blood sugar and are strictly avoided on keto. The ingredients are simply dairy and the cultures needed to transform it.
Nutritional Value
To understand why sour cream fits into a ketogenic lifestyle, we have to look at the macronutrient ratio. The keto diet is high-fat, moderate-protein, and very low-carb. Sour cream aligns perfectly with this structure.
A standard serving of full-fat sour cream (about 2 tablespoons) typically contains around 2 grams of carbohydrates and 5 grams of fat. This results in a high fat-to-carb ratio that helps dieters meet their daily fat macros without exceeding their strict carb limits (usually 20-50g per day).
The calorie density is also moderate. While it is calorie-dense due to the fat content, this is actually beneficial for satiety on a high-fat diet. The fats in sour cream are dairy fats, which are a mix of saturated and monounsaturated fats. Because the lactose is fermented away, the 'sugar' impact on your blood glucose is negligible, making it a safe choice for maintaining ketosis.
Frequently Asked Questions
Does Sour cream contain dairy or gluten?
Is Sour cream good for weight loss?
Where can I buy Sour cream?
Is Sour cream safe for kids?

Pro Tip
Always double-check the label. Manufacturers change ingredients frequently without notice!




