{
  "dataset": "usda-cup-portions",
  "title": "Every cup, tablespoon and teaspoon portion in USDA FoodData Central",
  "what_a_row_is": "One household-measure portion USDA lists for one food, in one release, where the measure is a cup, a tablespoon or a teaspoon: the amount, the gram weight, USDA's own modifier, and for a Foundation Foods sample, when and where it was bought.",
  "what_this_is_not": "Not a measurement we made and not a recommendation. USDA's SR Legacy documentation says its household-measure weights are derived from published sources, industry files and earlier USDA studies, and that weights obtained from different sources vary considerably for some foods. No row states a cup volume or a filling method beyond what its modifier says.",
  "edition": "SR Legacy is frozen: USDA states it is the final release of the Standard Reference data type and will not be updated. Foundation Foods is re-released; the release used here is the one whose digest is recorded below.",
  "sources": [
    {
      "id": "usda-fdc-sr-legacy",
      "title": "USDA FoodData Central, SR Legacy (Standard Reference Legacy Release), CSV download, April 2018 data, file dated 2023-10-25",
      "publisher": "U.S. Department of Agriculture, Agricultural Research Service",
      "url": "https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_sr_legacy_food_csv_2018-04.zip",
      "accessed": "2026-09-13",
      "sha256": "b80817294b8850530aaedf2e515c02593b1824f763a0ff356e5c2081643e6fd0",
      "bytes": 6074592,
      "licence_id": "US-GOV-PD",
      "licence": "Work of the United States Government, not subject to copyright (17 U.S.C. §105)",
      "licence_basis": "publisher-statement",
      "licence_note": "The Data.gov catalogue record for FoodData Central (https://catalog.data.gov/dataset/fooddata-central, read 2026-09-13) states its licence as https://www.usa.gov/publicdomain/label/1.0/, the US Government public-domain label, and its access level as public. FoodData Central's own pages carry no licence statement, which is recorded here as silence rather than upgraded into a grant; the statute and the catalogue record are the basis.",
      "rows": 3786
    },
    {
      "id": "usda-fdc-foundation",
      "title": "USDA FoodData Central, Foundation Foods, CSV download, release of 2025-04-24",
      "publisher": "U.S. Department of Agriculture, Agricultural Research Service",
      "url": "https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_foundation_food_csv_2025-04-24.zip",
      "accessed": "2026-09-13",
      "sha256": "56a169d02b6db1fdad7887f10bc01001cbb06393f0fae722c4afec20d3741a2d",
      "bytes": 3424407,
      "licence_id": "US-GOV-PD",
      "licence": "Work of the United States Government, not subject to copyright (17 U.S.C. §105)",
      "licence_basis": "publisher-statement",
      "licence_note": "The Data.gov catalogue record for FoodData Central (https://catalog.data.gov/dataset/fooddata-central, read 2026-09-13) states its licence as https://www.usa.gov/publicdomain/label/1.0/, the US Government public-domain label, and its access level as public. FoodData Central's own pages carry no licence statement, which is recorded here as silence rather than upgraded into a grant; the statute and the catalogue record are the basis.",
      "rows": 763
    },
    {
      "id": "artwaste-land",
      "title": "The extraction and the unit reading",
      "publisher": "Artificial Wasteland",
      "url": "https://artwaste.land/tools/cup-weights/",
      "accessed": "2026-09-13",
      "licence_id": "CC0-1.0",
      "licence": "CC0 1.0 Universal (public domain dedication)",
      "licence_basis": "publisher-statement",
      "licence_note": "Ours, dedicated to the public domain. The generator is research/cup-weights/extract-usda.mjs, and research/cup-weights/verify.mjs re-derives every row from the raw files with a second reader."
    }
  ],
  "rows": 4549
}