{
  "version": "ecfr-title27-part4-2026.1",
  "effectiveDate": "2026-09-21",
  "source": "Electronic Code of Federal Regulations, Title 27 Part 4 — Labeling and Advertising of Wine",
  "sourceUrl": "https://www.ecfr.gov/current/title-27/part-4",
  "licence": "public domain (work of the United States Government, 17 U.S.C. 105)",
  "attribution": [
    "Office of the Federal Register and the Government Publishing Office, eCFR"
  ],
  "cadence": "Checked monthly.",
  "scopeNote": "These are UNITED STATES labelling thresholds — what a wine sold in the US may be called. They are not EU appellation blending rules, which are not published as data anywhere; see /v1/sources.",
  "foreignAppellationNote": "27 CFR 4.25 recognises an appellation approved 'under part 9 of this chapter or by the appropriate foreign government', which is how a non-US appellation becomes usable on a US label.",
  "counts": {
    "sections": 3,
    "thresholds": 8
  },
  "rules": [
    {
      "section": "4.23",
      "key": "varietal",
      "title": "Varietal (grape type) labeling",
      "citation": "27 CFR 4.23",
      "url": "https://www.ecfr.gov/current/title-27/part-4/section-4.23",
      "thresholds": [
        {
          "percent": 75,
          "sentence": "Except as provided in paragraph (c) of this section, the name of a single grape variety may be used as the type designation if not less than 75 percent of the wine is derived from grapes of that variety, the entire 75 percent of which was grown in the labeled appellation of origin area."
        },
        {
          "percent": 51,
          "sentence": "(1) Wine made from any Vitis labrusca variety (exclusive of hybrids with Vitis labrusca parentage) may be labeled with the variety name if: (i) Not less than 51 percent of the wine is derived from grapes of the named variety; (ii) The statement “contains not less than 51 percent (name of variety)” is shown on the brand label, back label, or a separate strip label, (except that this statement need not appear if 75 percent or more of the wine is derived from grapes of the named variety); and (iii) The entire qualifying percentage of the named variety was grown in the labeled appellation of origin area."
        },
        {
          "percent": 75,
          "sentence": "(2) Wine made from any variety of any species found by the appropriate TTB officer upon appropriate application to be too strongly flavored at 75 percent minimum varietal content may be labeled with the varietal name if: (i) Not less than 51 percent of the wine is derived from grapes of that variety; (ii) The statement “contains not less than 51 percent (name of variety)” is shown on the brand label, back label, or a separate strip label (except that this statement need not appear if 75 percent or more of the wine is derived from grapes of the named variety); and (iii) The entire qualifying percentage of the named variety was grown in the labeled appellation of origin area."
        }
      ],
      "derived": [
        "key",
        "thresholds"
      ]
    },
    {
      "section": "4.25",
      "key": "appellation",
      "title": "Appellations of origin",
      "citation": "27 CFR 4.25",
      "url": "https://www.ecfr.gov/current/title-27/part-4/section-4.25",
      "thresholds": [
        {
          "percent": 75,
          "sentence": "An American wine is entitled to an appellation of origin other than a multicounty or multistate appellation, or a viticultural area, if: (i) At least 75 percent of the wine is derived from fruit or agricultural products grown in the appellation area indicated; (ii) it has been fully finished (except for cellar treatment pursuant to § 4."
        },
        {
          "percent": 75,
          "sentence": "An imported wine is entitled to an appellation of origin other than a multistate appellation, or a viticultural area, if: (i) At least 75 percent of the wine is derived from fruit or agricultural products grown in the area indicated by the appellation of origin; and (ii) The wine conforms to the requirements of the foreign laws and regulations governing the composition, method of production, and designation of wines available for consumption within the country of origin."
        },
        {
          "percent": 85,
          "sentence": "A wine may be labeled with a viticultural area appellation if: (i) The appellation has been approved under part 9 of this chapter or by the appropriate foreign government; (ii) Not less than 85 percent of the wine is derived from grapes grown within the boundaries of the viticultural area; (iii) In the case of foreign wine, it conforms to the requirements of the foreign laws and regulations governing the composition, method of production, and designation of wines available for consumption within the country of origin; and (iv) In the case of American wine, it has been fully finished within the State, or one of the States, within which the labeled viticultural area is located (except for cellar treatment pursuant to § 4."
        },
        {
          "percent": 85,
          "sentence": "An appellation of origin comprised of more than one viticultural area may be used in the case of overlapping viticultural areas if not less than 85 percent of the volume of the wine is derived from grapes grown in the overlapping area."
        }
      ],
      "derived": [
        "key",
        "thresholds"
      ]
    },
    {
      "section": "4.27",
      "key": "vintage",
      "title": "Vintage wine",
      "citation": "27 CFR 4.27",
      "url": "https://www.ecfr.gov/current/title-27/part-4/section-4.27",
      "thresholds": [
        {
          "percent": 95,
          "sentence": "The following additional rules apply to vintage labeling: (1) If an American or imported wine is labeled with a viticultural area appellation of origin (or its foreign equivalent), at least 95 percent of the wine must have been derived from grapes harvested in the labeled calendar year; or (2) If an American or imported wine is labeled with an appellation of origin other than a viticultural area (or its foreign equivalent), at least 85 percent of the wine must have been derived from grapes harvested in the labeled calendar year."
        }
      ],
      "derived": [
        "key",
        "thresholds"
      ]
    }
  ]
}