{
  "status": "verified-estimate",
  "perServing": {
    "calories": 117,
    "protein": 6,
    "carbs": 0.4,
    "fat": 10.5,
    "sugar": 0.1
  },
  "servings": 8,
  "servingBasis": "1/8 of the complete recipe; finished serving weight not measured",
  "ingredientSnapshot": [
    "240 g canned light tuna in water, drained solids weighed after draining",
    "100 g unsalted butter, cubed and softened for about 30 minutes",
    "20 g capers, drained",
    "20 g lemon juice",
    "5 g fresh parsley, finely chopped",
    "0.5 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://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_sr_legacy_food_csv_2018-04.zip",
    "https://fdc.nal.usda.gov/food-details/167747/nutrients",
    "https://fdc.nal.usda.gov/food-details/170416/nutrients",
    "https://fdc.nal.usda.gov/food-details/170931/nutrients",
    "https://fdc.nal.usda.gov/food-details/172238/nutrients",
    "https://fdc.nal.usda.gov/food-details/173430/nutrients",
    "https://fdc.nal.usda.gov/food-details/173709/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.",
    "Eight equal portions; no bread or crackers included. Contains fish and milk. Gluten-Free eligibility requires checking tuna and caper labels and preparation cross-contact."
  ],
  "ingredients": [
    {
      "sourceIndex": 0,
      "sourceText": "240 g canned light tuna in water, drained solids weighed after draining",
      "components": [
        {
          "ingredientKey": "tuna",
          "fdc_id": "173709",
          "foodDescription": "Fish, tuna, light, canned in water, drained solids (Includes foods for USDA's Food Distribution Program)",
          "foodState": "Fish, tuna, light, canned in water, drained solids (Includes foods for USDA's Food Distribution Program)",
          "quantity": 240,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Fish, tuna, light, canned in water, drained solids (Includes foods for USDA's Food Distribution Program). Canonical edible grams are recorded before recipe preparation.",
            "Canned light tuna in water, drained solids profile; discard packing water before weighing."
          ],
          "grams": 240,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 86,
            "protein": 19.44,
            "carbs": 0,
            "fat": 0.96,
            "sugar": 0
          },
          "contribution": {
            "calories": 206.4,
            "protein": 46.656000000000006,
            "carbs": 0,
            "fat": 2.304,
            "sugar": 0
          },
          "status": "mapped",
          "retainedEvidence": {
            "sourceRecipeId": "tuna-cheddar-open-faced-melts",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 1,
      "sourceText": "100 g unsalted butter, cubed and softened for about 30 minutes",
      "components": [
        {
          "ingredientKey": "butter",
          "fdc_id": "173430",
          "foodDescription": "Butter, without salt",
          "foodState": "Butter, without salt",
          "quantity": 100,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Butter, without salt. Canonical edible grams are recorded before recipe preparation.",
            "Softened unsalted butter, not melted; all retained."
          ],
          "grams": 100,
          "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": 717,
            "protein": 0.85,
            "carbs": 0.06,
            "fat": 81.11,
            "sugar": 0.06
          },
          "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": 2,
      "sourceText": "20 g capers, drained",
      "components": [
        {
          "ingredientKey": "capers",
          "fdc_id": "172238",
          "foodDescription": "Capers, canned",
          "foodState": "Capers, canned",
          "quantity": 20,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Capers, canned. Canonical edible grams are recorded before recipe preparation.",
            "Drained canned capers; brand brine variation remains."
          ],
          "grams": 20,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 23,
            "protein": 2.36,
            "carbs": 4.89,
            "fat": 0.86,
            "sugar": 0.41
          },
          "contribution": {
            "calories": 4.6,
            "protein": 0.472,
            "carbs": 0.978,
            "fat": 0.172,
            "sugar": 0.08199999999999999
          },
          "status": "mapped",
          "retainedEvidence": {
            "sourceRecipeId": "tomato-olive-caper-spaghetti",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 3,
      "sourceText": "20 g lemon juice",
      "components": [
        {
          "ingredientKey": "lemon_juice",
          "fdc_id": "167747",
          "foodDescription": "Lemon juice, raw",
          "foodState": "Lemon juice, raw",
          "quantity": 20,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Lemon juice, raw. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 20,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 22,
            "protein": 0.35,
            "carbs": 6.9,
            "fat": 0.24,
            "sugar": 2.52
          },
          "contribution": {
            "calories": 4.4,
            "protein": 0.07,
            "carbs": 1.38,
            "fat": 0.048,
            "sugar": 0.504
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "167747",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1302093",
              "protein": "1302043",
              "carbs": "1302092",
              "fat": "1302091",
              "sugar": "1302087"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "baked-salmon-dill-spread",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 4,
      "sourceText": "5 g fresh parsley, finely chopped",
      "components": [
        {
          "ingredientKey": "parsley",
          "fdc_id": "170416",
          "foodDescription": "Parsley, fresh",
          "foodState": "Parsley, fresh",
          "quantity": 5,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Parsley, fresh. Canonical edible grams are recorded before recipe preparation."
          ],
          "grams": 5,
          "conversion": {
            "type": "stated-weight",
            "basis": "Canonical edible ingredient mass in grams. No generic density or count conversion."
          },
          "per100g": {
            "calories": 36,
            "protein": 2.97,
            "carbs": 6.33,
            "fat": 0.79,
            "sugar": 0.85
          },
          "contribution": {
            "calories": 1.8,
            "protein": 0.14850000000000002,
            "carbs": 0.3165,
            "fat": 0.0395,
            "sugar": 0.0425
          },
          "status": "mapped",
          "sourceEvidence": {
            "file": "evidence/usda-selected-oct8-evidence.json",
            "fdc_id": "170416",
            "dataset": "USDA FoodData Central SR Legacy, April 2018 final release",
            "nutrientRowIds": {
              "calories": "1521984",
              "protein": "1522025",
              "carbs": "1521981",
              "fat": "1522005",
              "sugar": "1522058"
            }
          },
          "retainedEvidence": {
            "sourceRecipeId": "barley-walnut-stuffed-onions",
            "sourceDataset": "data/nutrition.json reconstructed from integrity-verified parts",
            "primaryFile": "data/evidence/nutrition-usda-selected-evidence.json"
          }
        }
      ]
    },
    {
      "sourceIndex": 5,
      "sourceText": "0.5 g ground black pepper",
      "components": [
        {
          "ingredientKey": "black_pepper",
          "fdc_id": "170931",
          "foodDescription": "Spices, pepper, black",
          "foodState": "Spices, pepper, black",
          "quantity": 0.5,
          "unit": "g",
          "notes": [
            "Primary profile matches the recorded food state: Spices, pepper, black. 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": 251,
            "protein": 10.39,
            "carbs": 63.95,
            "fat": 3.26,
            "sugar": 0.64
          },
          "contribution": {
            "calories": 1.255,
            "protein": 0.05195,
            "carbs": 0.31975000000000003,
            "fat": 0.0163,
            "sugar": 0.0032
          },
          "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": 935.4549999999999,
    "protein": 48.248450000000005,
    "carbs": 3.05425,
    "fat": 83.6898,
    "sugar": 0.6917
  },
  "missingNutrients": [],
  "reviewedAt": "2026-10-31"
}