{
  "status": "verified-estimate",
  "perServing": {
    "calories": 394,
    "protein": 13.6,
    "carbs": 57.2,
    "fat": 12.2,
    "sugar": 4.6
  },
  "servings": 4,
  "servingBasis": "1/4 of the complete recipe; 4 equal portions of spaetzle and onions; finished serving weight not measured",
  "ingredientSnapshot": [
    "250 g all-purpose flour",
    "150 g whole egg without shell",
    "80 g whole milk",
    "120 g raw spinach, washed and chopped",
    "300 g onion, thinly sliced",
    "35 g unsalted butter, divided",
    "4 g salt, divided",
    "1 g ground black pepper",
    "0.5 g ground nutmeg",
    "30 g water for wilting spinach, plus plain water for boiling"
  ],
  "method": "Ingredient-sum estimate from retained primary USDA and AFCD evidence and explicitly identified supplements; canonical gram quantities divided by stated equal portions",
  "sources": [
    "https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_sr_legacy_food_csv_2018-04.zip",
    "https://fdc.nal.usda.gov/food-details/168462/nutrients",
    "https://fdc.nal.usda.gov/food-details/168894/nutrients",
    "https://fdc.nal.usda.gov/food-details/170000/nutrients",
    "https://fdc.nal.usda.gov/food-details/170931/nutrients",
    "https://fdc.nal.usda.gov/food-details/171287/nutrients",
    "https://fdc.nal.usda.gov/food-details/171326/nutrients",
    "https://fdc.nal.usda.gov/food-details/172217/nutrients",
    "https://fdc.nal.usda.gov/food-details/173430/nutrients",
    "https://fdc.nal.usda.gov/food-details/173468/nutrients",
    "https://fdc.nal.usda.gov/food-details/174158/nutrients"
  ],
  "notes": [
    "ESTIMATED per serving. Brand, crop, preparation, draining, pan residue and substitutions change actual nutrition. Not laboratory analysis.",
    "Each ingredient retains its primary food description and state. All listed ingredient masses are counted; cooking moisture changes do not change the stated portion count. No generic nutrient-retention factor is invented.",
    "Calories are kcal; protein, total carbohydrate, fat and total sugar are grams. Total carbohydrate includes fiber and is not net carbohydrate. Fiber and sodium are not displayed.",
    "Equal portions or explicitly counted items define the stated recipe yield. US/Metric display changes do not change these canonical inputs.",
    "Primary-source supplements are retained per ingredient where USDA lacks a field; missing values are never silently changed to zero.",
    "Ingredient-input estimate divided by four; unmeasured starch losses to discarded boiling water and water uptake are not corrected. Contains wheat, egg and milk. Vegetarian criteria exclude meat broth and animal fat beyond the listed dairy."
  ],
  "ingredients": [
    {
      "sourceIndex": 0,
      "sourceText": "250 g all-purpose flour",
      "components": [
        {
          "ingredientKey": "flour",
          "fdc_id": "168894",
          "foodDescription": "Wheat flour, white, all-purpose, enriched, bleached",
          "foodState": "Wheat flour, white, all-purpose, enriched, bleached",
          "quantity": 250,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Wheat flour, white, all-purpose, enriched, bleached. Canonical edible grams are recorded before recipe preparation.",
            "All flour incorporated in wet batter, no bench flour or extra dusting used. Boiling losses are unmeasured."
          ],
          "grams": 250,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 364,
            "protein": 10.33,
            "carbs": 76.31,
            "fat": 0.98,
            "sugar": 0.27
          },
          "contribution": {
            "calories": 910,
            "protein": 25.825,
            "carbs": 190.775,
            "fat": 2.45,
            "sugar": 0.675
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/nutrition-usda-selected-evidence.json",
            "fdc_id": "168894",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1397086",
              "protein": "1397067",
              "carbs": "1397085",
              "fat": "1397084",
              "sugar": "1397123"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cocoa-vanilla-marble-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 1,
      "sourceText": "150 g whole egg without shell",
      "components": [
        {
          "ingredientKey": "egg",
          "fdc_id": "171287",
          "foodDescription": "Egg, whole, raw, fresh",
          "foodState": "Egg, whole, raw, fresh",
          "quantity": 150,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Egg, whole, raw, fresh. Canonical edible grams are recorded before recipe preparation.",
            "Whole raw edible egg mass without shells; no yolks or whites discarded."
          ],
          "grams": 150,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 143,
            "protein": 12.56,
            "carbs": 0.72,
            "fat": 9.51,
            "sugar": 0.37
          },
          "contribution": {
            "calories": 214.5,
            "protein": 18.84,
            "carbs": 1.08,
            "fat": 14.265,
            "sugar": 0.555
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "171287",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1597626",
              "protein": "1597683",
              "carbs": "1597748",
              "fat": "1597714",
              "sugar": "1597710"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cocoa-vanilla-marble-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 2,
      "sourceText": "80 g whole milk",
      "components": [
        {
          "ingredientKey": "milk",
          "fdc_id": "172217",
          "foodDescription": "Milk, whole, 3.25% milkfat, without added vitamin A and vitamin D",
          "foodState": "Milk, whole, 3.25% milkfat, without added vitamin A and vitamin D",
          "quantity": 80,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Milk, whole, 3.25% milkfat, without added vitamin A and vitamin D. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 80,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 61,
            "protein": 3.15,
            "carbs": 4.78,
            "fat": 3.27,
            "sugar": 5.05
          },
          "contribution": {
            "calories": 48.8,
            "protein": 2.52,
            "carbs": 3.8240000000000003,
            "fat": 2.616,
            "sugar": 4.04
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/nutrition-usda-selected-evidence.json",
            "fdc_id": "172217",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1677542",
              "protein": "1677625",
              "carbs": "1677518",
              "fat": "1677587",
              "sugar": "1677541"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cocoa-vanilla-marble-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 3,
      "sourceText": "120 g raw spinach, washed and chopped",
      "components": [
        {
          "ingredientKey": "spinach",
          "fdc_id": "168462",
          "foodDescription": "Spinach, raw",
          "foodState": "Spinach, raw",
          "quantity": 120,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Spinach, raw. Canonical edible grams are recorded before recipe preparation.",
            "Raw edible weight before wilting; no squeezing or draining, all leaves and remaining juices blended into batter."
          ],
          "grams": 120,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 23,
            "protein": 2.86,
            "carbs": 3.63,
            "fat": 0.39,
            "sugar": 0.42
          },
          "contribution": {
            "calories": 27.6,
            "protein": 3.432,
            "carbs": 4.356,
            "fat": 0.468,
            "sugar": 0.504
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "168462",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1362529",
              "protein": "1362463",
              "carbs": "1362528",
              "fat": "1362527",
              "sugar": "1362522"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "salmon-spinach-terrine",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 4,
      "sourceText": "300 g onion, thinly sliced",
      "components": [
        {
          "ingredientKey": "onion",
          "fdc_id": "170000",
          "foodDescription": "Onions, raw",
          "foodState": "Onions, raw",
          "quantity": 300,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Onions, raw. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 300,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 40,
            "protein": 1.1,
            "carbs": 9.34,
            "fat": 0.1,
            "sugar": 4.24
          },
          "contribution": {
            "calories": 120,
            "protein": 3.3,
            "carbs": 28.02,
            "fat": 0.3,
            "sugar": 12.72
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "170000",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1486615",
              "protein": "1486656",
              "carbs": "1486614",
              "fat": "1486613",
              "sugar": "1486606"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "red-lentil-crepes-with-cabbage",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 5,
      "sourceText": "35 g unsalted butter, divided",
      "components": [
        {
          "ingredientKey": "butter",
          "fdc_id": "173430",
          "foodDescription": "Butter, without salt",
          "foodState": "Butter, without salt",
          "quantity": 35,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Butter, without salt. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 35,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 717,
            "protein": 0.85,
            "carbs": 0.06,
            "fat": 81.11,
            "sugar": 0.06
          },
          "contribution": {
            "calories": 250.95,
            "protein": 0.2975,
            "carbs": 0.021,
            "fat": 28.3885,
            "sugar": 0.021
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "173430",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1778391",
              "protein": "1778445",
              "carbs": "1778444",
              "fat": "1778443",
              "sugar": "1778364"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cocoa-vanilla-marble-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 6,
      "sourceText": "4 g salt, divided",
      "components": [
        {
          "ingredientKey": "salt",
          "fdc_id": "173468",
          "foodDescription": "Salt, table",
          "foodState": "Salt, table",
          "quantity": 4,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Salt, table. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 4,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 0,
            "protein": 0,
            "carbs": 0,
            "fat": 0,
            "sugar": 0
          },
          "contribution": {
            "calories": 0,
            "protein": 0,
            "carbs": 0,
            "fat": 0,
            "sugar": 0
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "173468",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1781412",
              "protein": "1781407",
              "carbs": "1781411",
              "fat": "1781410",
              "sugar": "1781458"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cocoa-vanilla-marble-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 7,
      "sourceText": "1 g ground black pepper",
      "components": [
        {
          "ingredientKey": "black_pepper",
          "fdc_id": "170931",
          "foodDescription": "Spices, pepper, black",
          "foodState": "Spices, pepper, black",
          "quantity": 1,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Spices, pepper, black. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 1,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 251,
            "protein": 10.39,
            "carbs": 63.95,
            "fat": 3.26,
            "sugar": 0.64
          },
          "contribution": {
            "calories": 2.51,
            "protein": 0.1039,
            "carbs": 0.6395000000000001,
            "fat": 0.0326,
            "sugar": 0.0064
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "170931",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1566555",
              "protein": "1566602",
              "carbs": "1566554",
              "fat": "1566540",
              "sugar": "1566544"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "hand-pressed-ricotta-cavatelli",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 8,
      "sourceText": "0.5 g ground nutmeg",
      "components": [
        {
          "ingredientKey": "nutmeg",
          "fdc_id": "171326",
          "foodDescription": "Spices, nutmeg, ground",
          "foodState": "Spices, nutmeg, ground",
          "quantity": 0.5,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Spices, nutmeg, ground. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 0.5,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 525,
            "protein": 5.84,
            "carbs": 49.29,
            "fat": 36.31,
            "sugar": 2.99
          },
          "contribution": {
            "calories": 2.625,
            "protein": 0.0292,
            "carbs": 0.24645,
            "fat": 0.18155000000000002,
            "sugar": 0.014950000000000001
          },
          "status": "mapped",
          "retainedEvidence": {
            "sourceRecipeId": "pumpkin-spice-granola",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 9,
      "sourceText": "30 g water for wilting spinach, plus plain water for boiling",
      "components": [
        {
          "ingredientKey": "water",
          "fdc_id": "174158",
          "foodDescription": "Water, bottled, generic",
          "foodState": "Water, bottled, generic",
          "quantity": 30,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Water, bottled, generic. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 30,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 0,
            "protein": 0,
            "carbs": 0,
            "fat": 0,
            "sugar": 0
          },
          "contribution": {
            "calories": 0,
            "protein": 0,
            "carbs": 0,
            "fat": 0,
            "sugar": 0
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "174158",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1836451",
              "protein": "1836433",
              "carbs": "1836450",
              "fat": "1836449",
              "sugar": "1836455"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cocoa-vanilla-marble-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    }
  ],
  "totals": {
    "calories": 1576.985,
    "protein": 54.34760000000001,
    "carbs": 228.96195000000003,
    "fat": 48.70165,
    "sugar": 18.53635
  },
  "missingNutrients": [],
  "reviewedAt": "2026-10-29"
}