Judgment of the Court (Third Chamber) of 29 April 2021.#Natumi GmbH v Land Nordrhein-Westfalen.#Request for a preliminary ruling from the Bundesverwaltungsgericht.#Reference for a preliminary ruling – Agriculture and fisheries – Organic production and labelling of organic products – Regulation (EC) No 834/2007 – Article 19(2) – Articles 21 and 23 – Regulation (EC) No 889/2008 – Article 27(1) – Article 28 – Annex IX, point 1.3 – Processing of organic food – Non-organic ingredients of agricultural origin – Lithothamnium calcareum alga – Powder obtained by cleaning, grinding and drying the sediment of that alga – Classification – Use in organic foodstuffs for the purpose of calcium enrichment – Authorisation – Conditions.#Case C-815/19.