{
 "license": "https://creativecommons.org/licenses/by/4.0/",
 "id": "orris-ageing",
 "type": "Process",
 "version": 1,
 "updated": "2026-09-30",
 "confidence": "B",
 "history": {
  "value": null,
  "evidence": null,
  "source": null,
  "where": null,
  "confidence": null,
  "note": "no Historical Event record yet"
 },
 "media": [],
 "station": 3,
 "kind": "post-harvest",
 "sources": [
  "GC-4"
 ],
 "name": {
  "value": "ageing of the rhizomes",
  "evidence": "documented",
  "source": "GC-4",
  "quote": "Traditional aging of rhizomes is a slow desiccation process in which oxidative degradation of iridals leads to the slow accumulation of irones.",
  "where": "docs/sources/GC-4-crisan-2025-genus-iris.md:34",
  "confidence": "B"
 },
 "method": {
  "value": "washed, sliced and dried (black-type orris), or peeled by hand and slowly dried for a few years (white-type)",
  "evidence": "documented",
  "source": "GC-4",
  "quote": "To obtain black-type orris, harvested rhizomes are washed, sliced and dried, and for white-type orris, they are peeled by hand and undergo slow drying for a few years [156].",
  "where": "docs/sources/GC-4-crisan-2025-genus-iris.md:31",
  "confidence": "B"
 },
 "timing": {
  "value": null,
  "evidence": null,
  "source": null,
  "where": null,
  "confidence": null,
  "note": "after the harvest; no further timing filed"
 },
 "yields": {
  "value": "the aged rhizome, in which the irones have formed",
  "evidence": "documented",
  "source": "GC-4",
  "quote": "Traditional aging of rhizomes is a slow desiccation process in which oxidative degradation of iridals leads to the slow accumulation of irones.",
  "where": "docs/sources/GC-4-crisan-2025-genus-iris.md:34",
  "confidence": "B",
  "note": "the iridals break down by oxidation into irones"
 },
 "parameters": {
  "value": "about three years of ageing, after three years in the field",
  "evidence": "documented",
  "source": "GC-4",
  "quote": "From planting to extraction, orris crops undergo at least a six-year cycle: three until rhizomes are harvested in the summer and approximately another three for aging the orris [108].",
  "where": "docs/sources/GC-4-crisan-2025-genus-iris.md:28",
  "confidence": "B"
 },
 "materials": [
  "orris-butter"
 ],
 "botanicals": [
  "iris-pallida"
 ],
 "origins": [],
 "links": {
  "essay": "/materials#origin-iris"
 },
 "copy": {
  "lede": "Orris rhizomes are dried and aged for about three years before distillation: as they slowly dry, the iridals break down and the irones that carry the scent form."
 }
}