{
  "status": "verified-estimate",
  "perServing": {
    "calories": 595,
    "protein": 33.4,
    "carbs": 44.7,
    "fat": 31.7,
    "sugar": 8.4
  },
  "servings": 4,
  "servingBasis": "1/4 of the complete recipe; 4 equal portions of the complete gratin; finished serving weight not measured",
  "ingredientSnapshot": [
    "500 g raw skinless boneless farmed Atlantic salmon, cut into 1-inch pieces",
    "700 g raw potatoes with skin, scrubbed and sliced 1/8-inch thick",
    "250 g raw leek, trimmed, thoroughly washed and sliced",
    "300 g whole milk",
    "100 g heavy whipping cream",
    "15 g unsalted butter",
    "8 g garlic, minced",
    "10 g fresh dill, chopped",
    "4 g salt",
    "1 g ground black pepper"
  ],
  "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://assets.publishing.service.gov.uk/media/60538b91e90e07527df82ae4/McCance_Widdowsons_Composition_of_Foods_Integrated_Dataset_2021..xlsx",
    "https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_sr_legacy_food_csv_2018-04.zip",
    "https://fdc.nal.usda.gov/food-details/169230/nutrients",
    "https://fdc.nal.usda.gov/food-details/169246/nutrients",
    "https://fdc.nal.usda.gov/food-details/170026/nutrients",
    "https://fdc.nal.usda.gov/food-details/170859/nutrients",
    "https://fdc.nal.usda.gov/food-details/170931/nutrients",
    "https://fdc.nal.usda.gov/food-details/172217/nutrients",
    "https://fdc.nal.usda.gov/food-details/172233/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/175167/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.",
    "Divide the complete gratin by four, including all sauce. Contains fish and milk. Gluten-free depends on checked plain dairy and seasonings and individual cross-contact requirements. No cheese, breadcrumbs or side dish included."
  ],
  "ingredients": [
    {
      "sourceIndex": 0,
      "sourceText": "500 g raw skinless boneless farmed Atlantic salmon, cut into 1-inch pieces",
      "components": [
        {
          "ingredientKey": "salmon",
          "fdc_id": "175167",
          "foodDescription": "Fish, salmon, Atlantic, farmed, raw",
          "foodState": "Fish, salmon, Atlantic, farmed, raw",
          "quantity": 500,
          "unit": "g",
          "notes": [
            "Raw farmed Atlantic salmon profile, matching the specified species and production state; not wild Atlantic salmon.",
            "Primary profile matches the recorded food state: Fish, salmon, Atlantic, farmed, raw. Canonical edible grams are recorded before recipe preparation.",
            "Raw edible skinless boneless farmed Atlantic salmon mass; all fish and baking juices retained."
          ],
          "grams": 500,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 208,
            "protein": 20.42,
            "carbs": 0,
            "fat": 13.42,
            "sugar": 0
          },
          "contribution": {
            "calories": 1040,
            "protein": 102.1,
            "carbs": 0,
            "fat": 67.1,
            "sugar": 0
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "175167",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1918084",
              "protein": "1918132",
              "carbs": "1918165",
              "fat": "1918098",
              "sugar": "1918161"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "baked-salmon-dill-spread",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 1,
      "sourceText": "700 g raw potatoes with skin, scrubbed and sliced 1/8-inch thick",
      "components": [
        {
          "ingredientKey": "potato",
          "fdc_id": "170026",
          "foodDescription": "Potatoes, flesh and skin, raw",
          "foodState": "Potatoes, flesh and skin, raw",
          "quantity": 700,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Potatoes, flesh and skin, raw. Canonical edible grams are recorded before recipe preparation.",
            "Raw flesh-and-skin weight; simmered directly in measured dairy, without draining or discarding starch."
          ],
          "grams": 700,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 77,
            "protein": 2.05,
            "carbs": 17.49,
            "fat": 0.09,
            "sugar": 0.82
          },
          "contribution": {
            "calories": 539,
            "protein": 14.349999999999998,
            "carbs": 122.42999999999998,
            "fat": 0.63,
            "sugar": 5.74
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/nutrition-usda-selected-evidence.json",
            "fdc_id": "170026",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1488814",
              "protein": "1488836",
              "carbs": "1488857",
              "fat": "1488784",
              "sugar": "1488866"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "cod-pea-potato-fish-pie",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 2,
      "sourceText": "250 g raw leek, trimmed, thoroughly washed and sliced",
      "components": [
        {
          "ingredientKey": "leek",
          "fdc_id": "169246",
          "foodDescription": "Leeks, (bulb and lower leaf-portion), raw",
          "foodState": "Leeks, (bulb and lower leaf-portion), raw",
          "quantity": 250,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Leeks, (bulb and lower leaf-portion), raw. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 250,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 61,
            "protein": 1.5,
            "carbs": 14.15,
            "fat": 0.3,
            "sugar": 3.9
          },
          "contribution": {
            "calories": 152.5,
            "protein": 3.75,
            "carbs": 35.375,
            "fat": 0.75,
            "sugar": 9.75
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/nutrition-usda-selected-evidence.json",
            "fdc_id": "169246",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1426872",
              "protein": "1426924",
              "carbs": "1426930",
              "fat": "1426900",
              "sugar": "1426934"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "lemon-leek-walnut-spaghetti",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 3,
      "sourceText": "300 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": 300,
          "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.",
            "All measured milk and cream retained in casserole; evaporation not treated as nutrient loss."
          ],
          "grams": 300,
          "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": 183,
            "protein": 9.45,
            "carbs": 14.34,
            "fat": 9.81,
            "sugar": 15.15
          },
          "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": "chocolate-pear-upside-down-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 4,
      "sourceText": "100 g heavy whipping cream",
      "components": [
        {
          "ingredientKey": "heavy_cream",
          "fdc_id": "170859",
          "foodDescription": "Cream, fluid, heavy whipping",
          "foodState": "Cream, fluid, heavy whipping",
          "quantity": 100,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Cream, fluid, heavy whipping. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 100,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 340,
            "protein": 2.84,
            "carbs": 2.84,
            "fat": 36.08,
            "sugar": 2.92
          },
          "contribution": {
            "calories": 340,
            "protein": 2.84,
            "carbs": 2.84,
            "fat": 36.08,
            "sugar": 2.92
          },
          "status": "mapped",
          "retainedEvidence": {
            "sourceRecipeId": "salted-caramel-sauce",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 5,
      "sourceText": "15 g unsalted butter",
      "components": [
        {
          "ingredientKey": "butter",
          "fdc_id": "173430",
          "foodDescription": "Butter, without salt",
          "foodState": "Butter, without salt",
          "quantity": 15,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Butter, without salt. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 15,
          "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": 107.55,
            "protein": 0.1275,
            "carbs": 0.009,
            "fat": 12.166500000000001,
            "sugar": 0.009
          },
          "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": "chocolate-pear-upside-down-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 6,
      "sourceText": "8 g garlic, minced",
      "components": [
        {
          "ingredientKey": "garlic",
          "fdc_id": "169230",
          "foodDescription": "Garlic, raw",
          "foodState": "Garlic, raw",
          "quantity": 8,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Garlic, raw. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 8,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 149,
            "protein": 6.36,
            "carbs": 33.06,
            "fat": 0.5,
            "sugar": 1
          },
          "contribution": {
            "calories": 11.92,
            "protein": 0.5088,
            "carbs": 2.6448,
            "fat": 0.04,
            "sugar": 0.08
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "169230",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1425626",
              "protein": "1425663",
              "carbs": "1425625",
              "fat": "1425672",
              "sugar": "1425637"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "spinach-ricotta-crespelle",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 7,
      "sourceText": "10 g fresh dill, chopped",
      "components": [
        {
          "ingredientKey": "dill",
          "fdc_id": "172233",
          "foodDescription": "Dill weed, fresh",
          "foodState": "Dill weed, fresh",
          "quantity": 10,
          "unit": "g",
          "notes": [
            "Missing SR Legacy total sugar supplied by the matching food/state in primary UK CoFID 2021. Only the missing sugar field is supplemented; USDA calories and macronutrients remain unchanged.",
            "Primary profile matches the recorded food state: Dill weed, fresh. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 10,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 43,
            "protein": 3.46,
            "carbs": 7.02,
            "fat": 1.12,
            "sugar": 0.8
          },
          "contribution": {
            "calories": 4.3,
            "protein": 0.34600000000000003,
            "carbs": 0.7019999999999998,
            "fat": 0.11200000000000002,
            "sugar": 0.08
          },
          "status": "mapped",
          "supplementaryNutrients": {
            "sugar": {
              "foodCode": "13-824",
              "foodDescription": "Dill, fresh",
              "dataset": "UK Public Health England CoFID 2021",
              "worksheet": "1.3 Proximates",
              "excelRow": 1041,
              "column": "Total sugars (g)",
              "per100g": 0.8,
              "source_url": "https://assets.publishing.service.gov.uk/media/60538b91e90e07527df82ae4/McCance_Widdowsons_Composition_of_Foods_Integrated_Dataset_2021..xlsx"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "baked-salmon-dill-spread",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 8,
      "sourceText": "4 g salt",
      "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": "chocolate-pear-upside-down-cake",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 9,
      "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": "spinach-ricotta-crespelle",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    }
  ],
  "totals": {
    "calories": 2380.7800000000007,
    "protein": 133.5762,
    "carbs": 178.98029999999997,
    "fat": 126.72109999999999,
    "sugar": 33.7354
  },
  "missingNutrients": [],
  "reviewedAt": "2026-10-31"
}