Sour Cream Nutrition Calculator

Sour cream (FDC 2705614) contains 196 kcal, 19.35g fat, 3.07g protein, and 4.63g carbs per 100g. Nutritionally, it is remarkably close to light cream (195 kcal, 19.3g fat per 100g). Fermentation by *Lactococcus* and *Leuconostoc* bacteria converts some lactose to lactic acid — giving the sour flavor — but barely changes the macros ^[1].

The fermentation does reduce lactose: sour cream typically has ~25% less lactose than unfermented cream of the same fat content. The lactic acid bacteria consume lactose as fuel, producing the acid that thickens the cream. This makes sour cream slightly more tolerable for those tracking lactose intake ^[2].

Two tablespoons (30g) — a typical baked-potato or taco topping — contain 59 kcal, 5.8g fat, 0.9g protein, and 1.4g carbs. A generous quarter-cup dollop (60g) doubles to 118 kcal and 11.6g fat. Most people underestimate sour cream portions by 2-3x when self-serving ^[1].

The fat-reduction spectrum: regular (196 kcal, 19.4g fat), light (136 kcal, 12.1g fat), fat-free (74 kcal, 0g fat) per 100g. Fat-free achieves a 62% calorie reduction but relies on modified food starch, gums, and stabilizers to mimic the creamy texture ^[1].

Protein stays relatively stable across all three: 3.07g (regular), 3.5g (light), 3.1g (fat-free). But carbs shift dramatically: 4.63g (regular) → 5.6g (light) → 15.6g (fat-free). The additional carbs in fat-free come from starches and stabilizers added to replace the mouthfeel of fat ^[1].

For straight dollop applications (on baked potatoes, tacos, soups), light sour cream provides the best balance: 31% fewer calories than regular with similar taste and texture, and without the starchy mouthfeel of fat-free. Per 2-tablespoon serving: 41 kcal (light) vs 59 kcal (regular) vs 22 kcal (fat-free) ^[3].

Full-fat Greek yogurt has 97 kcal and 9.0g protein per 100g vs sour cream's 196 kcal and 3.07g protein. That's a 51% calorie reduction with a 2.9x protein increase — one of the most nutritionally favorable substitutions in everyday cooking ^[1].

The flavor profiles overlap significantly in cold applications: dips, toppings, and dressings. Greek yogurt has a tangier, less rich flavor than sour cream. In baking, Greek yogurt works as a 1:1 substitute in most recipes — muffins, cakes, and pancakes — with the added protein often improving structure ^[2].

The calcium content is comparable: 100mg (Greek yogurt) vs 110mg (sour cream) per 100g. But B12 is dramatically higher in Greek yogurt: 0.75mcg vs 0.30mcg per 100g — making the yogurt substitute superior for B12 tracking. Fat drops from 19.4g to 5.0g, and cholesterol from 52mg to 13mg per 100g ^[1].

A standard spinach-artichoke dip uses 1 cup (240g) sour cream: 470 kcal and 46.4g fat from sour cream alone. Divided into 8 servings, each gets 59 kcal and 5.8g fat from sour cream — plus the cheese, spinach, and other ingredients typically doubling the total ^[1].

In baking, sour cream adds moisture and fat that creates tender crumbs. A sour cream coffee cake uses 1 cup: the sour cream contributes 470 kcal to a cake yielding 12 slices — 39 kcal per slice from sour cream. Substituting Greek yogurt drops this to 233 kcal total (19 kcal per slice) while adding 14.4g extra protein to the entire cake ^[1].

For stroganoff or creamy pasta sauces, a half-cup (120g) of sour cream adds 235 kcal and 23.2g fat to 4 servings — 59 kcal per plate. Adding sour cream at the end (off heat) preserves the creamy texture; cooking it at high heat causes curdling and a grainy result without changing the calories ^[3].

Mexican crema is thinner and slightly sweeter than American sour cream: approximately 210 kcal, 21g fat per 100g — slightly higher in fat and calories. It uses a different culture and shorter fermentation, resulting in a milder, more pourable product ^[1].

Crème fraîche (French-style) typically has 30-40% fat depending on the producer: approximately 290-350 kcal per 100g. It's closer to light whipping cream in nutrition but with the tang of fermentation. Unlike sour cream, crème fraîche can be heated without curdling, making it the preferred choice for hot sauces ^[2].

For tracking purposes, the practical difference per tablespoon is modest: American sour cream ~29 kcal, Mexican crema ~32 kcal, crème fraîche ~44 kcal. The biggest gap is between sour cream and crème fraîche — a 52% calorie increase — but in typical serving sizes (1-2 tablespoons), this translates to only 15-30 extra calories ^[1].