Energy
middle half136 kcalthis record per 100 g
- Corpus median
- 101 kcal
- Middle 50%
- 69–280 kcal
Based on 137 records reporting energy.
Dairymoderate variability
Sour cream, light calories: 41 per 30 g
This exact USDA record reports 41 calories for 30 g. That answer belongs to this description and weight; it is not a universal value for every meal that shares the name.
Quick facts
USDA reference amount · 30 g
- Calories
- 41 kcal
- Protein
- 1.1 g
- Carbohydrate
- 2.1 g
- Total fat
- 3.2 g
- Fiber
- 0 g
- Sodium
- 25 mg
Portion calculator
Estimate your portion
Choose a source measure or enter the weight you ate.
Estimated for 30 g
41calories
Sour cream, light
- Protein
- 1.1 g
- Carbs
- 2.1 g
- Fat
- 3.2 g
— means the source has no value available.
These values scale the selected reference food by weight. Ingredients, preparation, and portion size can change your meal’s estimate.
Nutrition facts, household measures, preparation notes and USDA sources
The editorial read
The useful answer has a weight, a composition, and an identity
Portion: the cited record reports about 41 calories for USDA reference amount at 30 grams. On a fixed-weight basis, the same record contains 136 calories per 100 grams. The first number answers a portion question; the second answers a concentration question.
Composition: that source amount also reports 1.1 g protein, 0 g fiber, and 25 mg sodium. Read those values together: a calorie total by itself cannot describe the nutrient profile.
Identity: the largest listed formulation input is sour cream, light, representing 100% of the record’s listed input weight. These are provenance for a standardized calculation, not a recipe for your plate.
The reference amount and 1 tablespoon answer different portion questions. Their values are scaled independently from the same per-100-gram source record.
The household measures attached to this record span roughly 20–326 calories across the listed portions. That is a set of scaled examples—not a confidence interval, a recommendation, or a claim about the full universe of recipes.
Calculated from the smallest and largest usable household measures listed by USDA for this exact FNDDS record; not a confidence interval.
Record-specific decision brief
What the numbers say—and what choice still belongs to you
This analysis belongs to USDA FDC 2705615: “Sour cream, light.” It separates gram-weight arithmetic, corpus context, label signals, and record selection so one number does not have to answer four different questions.
01 · Portion arithmetic
Three weights, one fixed composition
For FDC 2705615, each row multiplies the published per-100-gram values by its stated weight. “1 tablespoon” through “1 cup” are weight scenarios: named measures come from USDA, while percentage labels are transparent arithmetic.
| Scenario | Weight | Energy | Protein | Fiber | Sodium |
|---|---|---|---|---|---|
| 1 tablespoonUSDA-listed household measure | 15 g | 20 kcal | 0.5 g | 0 g | 12 mg |
| USDA reference amountExact record reference weight | 30 g | 41 kcal | 1.1 g | 0 g | 25 mg |
| 1 cupUSDA-listed household measure | 240 g | 326 kcal | 8.4 g | 0 g | 199 mg |
02 · Fixed-weight context
Where 100 grams sits inside Dairy
The comparison set contains 137 exact records in Feast’s broader Dairy category. Here, “middle half” describes FDC 2705615’s energy position in that corpus—not nutritional quality, desirability, or a health rating.
Protein
middle half3.5 gthis record per 100 g
- Corpus median
- 4 g
- Middle 50%
- 3.1–16.8 g
Based on 137 records reporting protein.
Dietary fiber
middle half0 gthis record per 100 g
- Corpus median
- 0 g
- Middle 50%
- 0–0.1 g
Based on 137 records reporting dietary fiber.
Sodium
middle half83 mgthis record per 100 g
- Corpus median
- 60 mg
- Middle 50%
- 41–604 mg
Based on 137 records reporting sodium.
03 · FDA label lens
The strongest strength-side and tradeoff-side signals
At FDC 2705615’s 30 g reference weight, none of the compatible strength-side nutrients evaluated here reaches 5% Daily Value; the larger tradeoff-side percentage is Saturated fat. Percentages use FDA label Daily Values, whose general “high” guide begins at 20% Daily Value. This is not an overall score or a personalized target.
Strength-side signals
No compatible strength-side nutrient evaluated here reaches 5% DV at this reference weight, so this page does not manufacture a “strength” from a negligible percentage.
Tradeoff-side signals
Saturated fat2 g
≈ 10% DV. This does not cross the FDA’s 20% ‘high’ guide.
Sodium25 mg
≈ 1% DV. This does not cross the FDA’s 20% ‘high’ guide.
04 · Highest-impact checks
The three levers most worth resolving first
For “Sour cream, light,” the first-pass checks follow the evidence actually published: its named weights, the FDC 2705614 alternative, and its source-formulation identity.
- 01
Listed portion span: 1 tablespoon to 1 cup
USDA assigns those measures 15 g and 240 g. At this record’s fixed composition, scaled energy moves from 20 kcal to 326 kcal.
- 02
Record choice: compare with FDC 2705614
At an equal 100 g, this record has 7.4 g less total fat than “Sour cream, regular.” That is a record-level contrast; it does not identify which ingredient caused the difference.
- 03
Single listed source: Sour cream, light
USDA derives this record from one listed source-input row at 100 g. Real preparations can still differ in water, cooking state, brand, and served weight.
05 · Exact-record choice
Select by literal evidence, not the shortest name
Keep this record when “light” fits. Inspect FDC 2705614 when “regular” is the more literal description of the food and preparation.
Keep this profile when these fields fit
Sour cream, light
- Exact source wording
- “Sour cream, light”
- Source identity
- USDA FDC 2705615 · FNDDS 12310350
- Named qualifiers
- light
- Source inputs unique in this pair
- Sour cream, light
Inspect this alternative when its fields fit better
Sour cream, regular
- Exact source wording
- “Sour cream, regular”
- Source identity
- USDA FDC 2705614 · FNDDS 12310100
- Named qualifiers
- regular
- Source inputs unique in this pair
- Cream, sour, full fat
Choose the closest description
Which USDA record fits your meal?
Treat the long description as data. The phrases doing the most work here are “light”. Match those details first; then compare the database weight with the amount you mean.
On smaller screens, focus a nutrition table and scroll horizontally to read every column.
| Exact record | Source serving | Calories / 100 g | Protein / 100 g | Fat / 100 g | Fiber / 100 g | Sodium / 100 g |
|---|---|---|---|---|---|---|
| This recordSour cream, light | 30 g41 kcal | 136 kcal | 3.5 g | 10.6 g | 0 g | 83 mg |
| Sour cream, regular | 30 g59 kcal | 196 kcal | 3.1 g | 18 g | 0 g | 50 mg |
| Sour cream, imitation | 30 g62 kcal | 208 kcal | 2.4 g | 19.5 g | 0 g | 102 mg |
| Sour cream, fat free | 30 g22 kcal | 74 kcal | 3.1 g | 0 g | 0 g | 141 mg |
| Cream cheese, regular, flavored | 30 g83 kcal | 275 kcal | 8.2 g | 20.6 g | 0 g | 574 mg |
| Cream cheese, regular, plain | 30 g103 kcal | 343 kcal | 5.8 g | 33.5 g | 0 g | 368 mg |
How to compare FDC 2705615: its source amount is 30 g; every 100-gram column removes portion size from the record-to-record comparison. Neither denominator determines your plate’s weight or recipe.
Household measures
Compare listed portions
For FDC 2705615, the 2 displayed measures scale the same source composition by gram weight; rounding changes presentation, not the underlying ratio.
1 tablespoon
20 kcal
15 g
1 cup
326 kcal
240 g
At a glance
Nutrient signals in the source amount
For FDC 2705615, Saturated fat is the largest displayed non-protein Daily Value signal. Read the set as label context—not a personalized score.
Saturated fat
2 g≈ 10% Daily ValueTotal fat
3.2 g≈ 4% Daily ValueCholesterol
10.5 mg≈ 4% Daily ValueThe percentages above apply to FDC 2705615’s 30 g reference amount. FDA Daily Values are general label references, not individualized energy or medical targets. Read the FDA explanation ↗
Nutrition facts
Compare the source serving with 100 grams
Values are rounded for readability. The source serving is 30 g.
| Nutrient | Amount | Approx. % Daily Value |
|---|---|---|
| Calories | 41 kcal 136 kcal | Not established Not established |
| Protein | 1.1 g 3.5 g | Not shown Not shown |
| Carbohydrate | 2.1 g 7.1 g | 1% 3% |
| Total fat | 3.2 g 10.6 g | 4% 14% |
| Dietary fiber | 0 g 0 g | 0% 0% |
| Sugars | 0.1 g 0.2 g | Not established Not established |
| Sodium | 24.9 mg 83 mg | 1% 4% |
| Saturated fat | 2 g 6.6 g | 10% 33% |
| Monounsaturated Fat | 0.9 g 3.1 g | Not established Not established |
| Polyunsaturated Fat | 0.1 g 0.4 g | Not established Not established |
| Cholesterol | 10.5 mg 35 mg | 4% 12% |
| Potassium | 63.6 mg 212 mg | 1% 5% |
| Calcium | 42.3 mg 141 mg | 3% 11% |
| Iron | 0 mg 0.1 mg | 0% 0% |
| Magnesium | 3 mg 10 mg | 1% 2% |
| Vitamin C | 0.3 mg 0.9 mg | 0% 1% |
| Vitamin D | 0.1 µg 0.2 µg | 0% 1% |
| Vitamin A | 27 µg 90 µg | 3% 10% |
| Caffeine | 0 mg 0 mg | Not established Not established |
| Alcohol | 0 g 0 g | Not established Not established |
| Water | 23.4 g 78.1 g | Not established Not established |
For FDC 2705615, approximate percentages divide the displayed 30 g amount by FDA label Daily Values; they are not personalized targets. “Not established” means FDA sets no Daily Value for that row. Protein %DV remains unshown because adult-label use depends on regulatory context.
Inside the source record
Source formulation behind this USDA record
USDA links FDC 2705615 to one source input totaling 100 g in its standardized formulation. Publishing that exact provenance makes “Sour cream, light” inspectable beside similarly named records.
How to read this
A single-source formulation
Sour cream, light is the only listed source input for this record. That does not mean every real-world version is identical; brands, preparation, water content, and portion weight can still differ.
100 g total listed input weight across the formulation.
| # | USDA input | Listed amount | Input weight | Share of listed input weight |
|---|---|---|---|---|
| 1 | Sour cream, lightUSDA ingredient 1179 | 100 GM | 100 g | 100% |
Exact-record context
What makes this USDA record distinct?
For FDC 2705615, the close-record rule searches the USDA “Cream cheese, sour cream, whipped cream” category for shared description terms or source inputs. Any surviving pair is compared per 100 grams, so unlike source-serving sizes cannot manufacture the nutrient difference.
This record
Sour cream, light
- USDA category
- Cream cheese, sour cream, whipped cream
- FDC ID
- 2705615
- FNDDS code
- 12310350
Closest inspectable record
Sour cream, regular
- USDA category
- Cream cheese, sour cream, whipped cream
- FDC ID
- 2705614
- FNDDS code
- 12310100
| Nutrient | This record | Comparison record | Difference |
|---|---|---|---|
| Calories | 136 kcal | 196 kcal | −60 kcal |
| Protein | 3.5 g | 3.1 g | +0.4 g |
| Carbohydrate | 7.1 g | 5.6 g | +1.5 g |
| Total fat | 10.6 g | 18 g | −7.4 g |
| Dietary fiber | 0 g | 0 g | Same listed value |
| Sodium | 83 mg | 50 mg | +33 mg |
Plain-English read
At the fixed 100-gram basis, this record lists 60 less calories and 7.4 g less total fat than “Sour cream, regular.”
Only this record lists Sour cream, light. Only the comparison record lists Cream, sour, full fat. Those formulation rows identify different source records; they do not prove which input caused a nutrient difference.
2 of the six displayed differences clear the documented materiality screen. It is a reading aid, not a health rating.
Formulation evidence
The listed formulations differ
The formulation rows differ, but the source data do not isolate which component caused any nutrient difference. Input weights describe the standardized formulation—not final plated proportions.
Listed only in this record: Sour cream, light.
Listed only in the comparison: Cream, sour, full fat.
Portion evidence
The listed portion sets differ
This record’s reference amount is 30 g; a familiar listed measure is 1 tablespoon (15 g).
The comparison record’s reference amount is 30 g; a familiar listed measure is 1 individual container (30 g).
Use the 100-gram row to compare FDC 2705615 with FDC 2705614 at equal mass; use their 30 g and 30 g source amounts only for portion matching.
Evidence boundary: FDC 2705615 versus FDC 2705614 is a comparison of standardized source records—not a measurement of your meal, an overall food-quality rank, or proof that one input caused a difference.
Deep comparisons
Controlled comparisons that include this exact record
FDC 2705615 appears in 2 pair pages that passed semantic, material-difference, source-evidence, and diversity gates. Each preserves a 100-gram denominator and both primary records.
From record to familiar meal
Guides that use this exact USDA record
These 1 guide place “Sour cream, light” beside explicitly linked source records; use them to compare preparations without turning FDC 2705615 into a universal recipe.
Uncertainty, made actionable
What can change this estimate?
This is a standardized USDA survey-food profile, not a measurement of every preparation. Actual nutrition can change with portion size, fat level, brand or formulation, added flavors or sweeteners.
For “Sour cream, light,” resolve portion size first, then move through the remaining 3 published levers. Unknowns should remain visible rather than expanding every assumption at once.
- 01
portion size
When composition is held constant, nutrient totals scale directly with grams. A 20% weight correction produces the same 20% correction to the scaled totals.
- 02
fat level
Match the named cooking-fat state when possible. Fat used, retained, or left behind is preparation information that a dish name alone cannot recover.
- 03
brand or formulation
Prefer a package, menu, or known recipe when it identifies the food more precisely. Otherwise preserve the generic record as an explicit approximation.
- 04
added flavors or sweeteners
Use a label or known recipe when available, because sweetness does not reveal dose. Keep syrups, sugars, and concentrated add-ins separate when the base record does not name them.
How we estimated this
The arithmetic is simple; the provenance is the point
FDC 2705615 comes from FoodData Central Survey Foods (FNDDS). Its 136 kcal per 100 g becomes 41 kcal at 30 g through nutrient per portion = nutrient per 100 g × portion grams ÷ 100; this page adds no second nutrition estimate.
About the serving label: USDA describes the underlying survey portion as “Quantity not specified.” We display it as a USDA reference amount because it is a database comparison point—not a suggested portion or a claim about what most people should eat.
Data cycle: 2021–2023, published October 31, 2024
FoodData Central ID: 2705615
FNDDS food code: 12310350
The scaling for FDC 2705615 can be exact while the match to “Sour cream, light” is wrong. That is why this profile keeps its 30 g weight, 1-row source formulation, and selection uncertainty beside the arithmetic.
Source release October 31, 2024. Review USDA’s data-type documentation ↗ · Read Feast’s full nutrition methodology.