Sour cream is cream that has been fermented with lactic acid bacteria cultures, giving it a distinctive tangy flavour and thick, smooth texture quite different from fresh cream. Widely used across Mexican, Eastern European and general Western cooking, sour cream is a familiar topping for tacos, baked potatoes, borscht and countless dips, as well as a baking ingredient that adds moisture, tang and tenderness to cakes and pastries. Nutritionally, sour cream is calorie-dense and high in fat, reflecting its cream base, with modest protein and a low glycaemic impact. Adjust the slider for your serving size.
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Serving size:30g
58Calories (kcal)
1.4Carbs (g)
0.7Protein (g)
0.0Fibre (g)
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📊 Full nutrition facts — per 100g
Nutrient
Amount
% Daily value
Level
Calories
193 kcal
10%
Carbohydrates
4.6g
2%
Protein
2.4g
5%
Total fat
19.4g
—
Saturated fat
12.1g
—
GI
~20 — Low
—
Calcium
110mg
11%
Vitamin A
179µg
20%
Phosphorus
80mg
8%
Vitamin B2
0.14mg
9%
Sodium
55mg
—
Potassium
130mg
3%
Based on Australian NRV. Source: FSANZ Australian Food Composition Database.
📈 Glycaemic index (GI)
20
Glycaemic IndexLow GISour cream has a GI of approximately 20 — low. Its very high fat content and minimal carbohydrate mean any glycaemic impact is modest, with the small amount of lactose present slowed further by the cream's rich fat content.
0 · Low (<55)Medium (56–69)High (70+) · 100
💊 Key vitamins & minerals
Vitamin A
179µg/100g
20% RDI per 100g
GI
~20 — Low
Minimal glycaemic impact
Calcium
110mg
11% RDI per 100g
Fat
19.4g/100g
Defines rich texture
Sodium
55mg
Very low — no brining or salting
Live cultures
Present
Lactic acid fermentation
✅ Health benefits
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Meaningful vitamin A from its cream base
Sour cream provides 179µg of vitamin A per 100g — 20% of the daily requirement, reflecting its cream content, since fat-soluble vitamin A concentrates in dairy fat. A typical 30g dollop provides roughly 54µg, a small but genuine contribution from a common condiment portion.
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Live cultures from the fermentation process
Sour cream is made using lactic acid bacteria cultures, similar in principle to yogurt production, which give it its characteristic tang. Properly refrigerated commercial sour cream retains some live culture activity, though pasteurisation and processing methods vary by brand and may reduce the extent compared to traditional home fermentation.
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Low glycaemic impact from minimal carbohydrate and high fat
At a GI of approximately 20, sour cream has a gentle blood glucose profile, reflecting both its very low carbohydrate content and its high fat, which further slows any digestion. This makes it a reasonably low-impact condiment choice for people monitoring glycaemic response, within the context of its calorie and saturated fat density.
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Very low sodium compared to many dairy products
At just 55mg of sodium per 100g, sour cream is considerably lower in sodium than most cheeses in this guide, reflecting its production method, which involves no brining, curing or significant salting step — a point worth noting for people specifically managing sodium intake who still want dairy richness in their cooking.
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⚠️ Who should limit or avoid
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High saturated fat — 12.1g per 100g
A 30g dollop of sour cream provides approximately 3.6g of saturated fat, around 18% of the daily recommended limit. Because sour cream is often used generously (a substantial spoonful on tacos, baked potato or in a rich sauce), actual intake from a meal can exceed the per-30g reference figure.
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Calorie-dense with modest protein
At 193 kcal per 100g with only 2.4g of protein, sour cream offers relatively little nutrition beyond flavour, richness and modest vitamin A per calorie — it functions best as a flavour and texture ingredient used in moderation rather than a significant source of any single nutrient.
While the fermentation process partially breaks down lactose, sour cream still contains a meaningful amount (4.6g/100g) — comparable to fresh cream and milk. People with lactose intolerance may experience symptoms from typical serving sizes, particularly if sour cream is used generously across a meal.
✅ For most healthy adults, sour cream used as a topping or cooking ingredient in typical, moderate portions offers useful vitamin A with a low glycaemic profile and notably low sodium. Its high saturated fat and calorie density are the main considerations — reduced-fat versions are widely available for those wanting the flavour with less richness.
⚕️ General nutritional information only — not a substitute for professional medical or dietary advice.
🛒 How to select & buy sour cream
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Full-fat vs light/reduced-fat sour cream
Full-fat sour cream (~18-20% fat): richest flavour and texture, the traditional choice, most stable for cooking applications involving heat since it's less prone to splitting. Light/reduced-fat sour cream (~10-12% fat): noticeably lighter texture and flavour, often with added thickeners (gelatine, starch) to compensate for reduced fat — works well for everyday topping use but can behave differently when heated in cooking, sometimes splitting more readily.
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Cooking with sour cream — avoiding splitting
Sour cream can split (separate into curds and liquid) if added directly to a very hot dish or boiled — for sauces and soups, temper it first by stirring a small amount of the hot liquid into the sour cream before adding it back to the pan, and avoid boiling once added. Full-fat sour cream is generally more heat-stable than light versions due to its higher fat content, making it the more reliable choice for cooked applications.
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Sour cream vs crème fraîche vs Greek yoghurt as substitutes
Crème fraîche: similar fermented cream product, generally higher fat and more heat-stable than sour cream, milder tang — a good substitute in cooked sauces. Greek yoghurt: can substitute for sour cream as a lower-fat topping option with a tangier, thicker profile, though it behaves differently when heated and is more prone to splitting in hot dishes than full-fat sour cream.
🇦🇺 Australian tip: Sour cream is available at every Australian supermarket, with Dairy Farmers, Coles and Woolworths own-brand, and various regional dairy processors offering both full-fat and light versions, typically priced $2-4 for a 300g tub. Sour cream is a well-established Australian pantry and fridge staple, closely tied to the popularity of Mexican-style cooking (tacos, nachos, burritos) in Australian households and restaurants, as well as its traditional use in Eastern European-influenced dishes like beef stroganoff and borscht, both of which have a long-standing place in Australian home cooking.
🧊 Storage tips & shelf life
Refrigerator
2-3 weeks unopened; 1-2 weeks opened
Keep sealed tightly, use a clean spoon each time
Store sour cream continuously refrigerated and check the use-by date. Once opened, reseal tightly and use within 1-2 weeks, always using a clean utensil when scooping to avoid introducing contamination. Some liquid separation (whey) on top is normal and can simply be stirred back in.
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Freezer
Not generally recommended
Texture separates significantly on thawing
Sour cream does not freeze well — its emulsified structure tends to separate badly upon thawing, resulting in a grainy, watery texture unsuitable for most uses, even in cooking. It's best purchased in quantities that will be used within its fresh refrigerated shelf life.
Sour cream, like many fermented dairy products, likely has origins stretching back centuries across Central and Eastern Europe, where naturally souring cream — through ambient bacterial fermentation in the era before refrigeration — was both a practical necessity for extending the usable life of fresh cream and a flavour discovery in its own right. Traditional sour cream (known by various regional names including smetana in Russian and Slavic culinary traditions) has long been a foundational ingredient across Russian, Polish, Ukrainian, German and broader Central and Eastern European cuisine, used in soups like borscht, sauces, baking and as a simple topping or condiment. Modern commercial sour cream production uses controlled bacterial cultures (typically Lactococcus lactis and related species) added deliberately to pasteurised cream under controlled fermentation conditions, replacing the historical reliance on natural ambient fermentation with a consistent, food-safety-controlled industrial process.
Sour cream's establishment as a mainstream American and, by extension, broader Western grocery staple through the 20th century was significantly influenced by both Eastern European immigrant food traditions and the later, substantial popularity of Mexican and Tex-Mex cuisine, which adopted sour cream as a standard taco, nacho and burrito topping. This dual culinary heritage — Eastern European traditional cooking alongside Mexican-influenced casual dining — has similarly shaped sour cream's place in Australian food culture, where it functions both as a traditional ingredient in dishes like beef stroganoff (itself of Russian origin but thoroughly adopted into Australian home cooking) and as an essential, expected accompaniment to the Mexican-style dishes that became increasingly popular in Australian restaurants and home cooking from the late 20th century onward, cementing sour cream's position as a genuine, versatile Australian pantry staple used across multiple distinct culinary traditions.
Sour cream (known as smetana in Russian and Slavic cuisine) has been a foundational ingredient across Central and Eastern European cooking for centuries
Smetana and its regional equivalents across Russian, Polish, Ukrainian and broader Slavic culinary traditions represent one of the most historically significant uses of fermented cream in world cuisine, deeply embedded in dishes ranging from borscht and other soups to sauces, dumplings and simple bread accompaniments for many centuries. This deep culinary tradition predates and is largely independent of sour cream's later, separate rise to popularity in American and broader Western cuisine through 20th-century commercial dairy production and Mexican-influenced dining trends.
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Sour cream's status as an essential taco and nacho topping reflects a specifically American and later international adaptation, not a traditional element of authentic Mexican cuisine
While sour cream is now considered an almost essential accompaniment to tacos, nachos and burritos across much of the English-speaking world including Australia, food historians note this pairing developed significantly through American Tex-Mex cuisine rather than being a core traditional element of authentic regional Mexican cooking, where crema (a related but distinct Mexican cultured cream product, typically thinner and less tangy than American-style sour cream) is more traditionally used. This represents a notable example of a specific dairy product becoming closely associated with a cuisine through commercial and cultural adaptation rather than direct historical culinary origin.
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Commercial sour cream production replaced historical natural fermentation with controlled bacterial cultures, similar to the broader industrialisation seen across fermented dairy products
Traditional sour cream production relied on naturally occurring ambient bacteria souring fresh cream over time in the era before refrigeration and controlled fermentation technology — a process with inherently variable results depending on ambient temperature, bacterial exposure and other uncontrolled factors. Modern commercial production instead uses specific, deliberately selected bacterial cultures (commonly Lactococcus lactis and related lactic acid bacteria species) added to pasteurised cream under controlled temperature and time conditions, producing consistent, food-safety-assured results at industrial scale — a transformation mirrored across many other traditionally fermented foods as they moved from small-scale traditional production to modern commercial manufacturing.
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The specific pairing of sour cream with baked potato has become one of the most recognised simple food combinations in Western casual dining
Baked potato topped with sour cream (often alongside chives, bacon bits or cheese) has become one of the most widely recognised simple side-dish combinations across American, Australian and broader Western casual dining culture, appearing on pub, steakhouse and casual restaurant menus with remarkable consistency. This particular pairing, while relatively simple, represents one of sour cream's most enduringly popular uses, reflecting how well its tangy richness complements the mild, starchy character of a plain baked potato without requiring any complex preparation.
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Beef stroganoff, a Russian-origin dish featuring sour cream, has been thoroughly adopted into mainstream Australian home cooking for decades
Beef stroganoff — a dish of Russian origin featuring sautéed beef in a rich sour cream sauce — became a genuinely popular and thoroughly adopted staple of Australian home cooking through the mid-to-late 20th century, appearing regularly in Australian cookbooks, magazines and family meal rotations despite its distinctly non-Australian origin. This adoption reflects a broader pattern in Australian food culture of readily incorporating dishes from diverse immigrant culinary traditions into mainstream home cooking repertoires, with beef stroganoff standing as one of the more enduring and widely recognised examples specifically featuring sour cream as a defining ingredient.