(en) EP patent 2237677, Dumarche Arnaud; Troplin Philippe & Bernaert Herwig et al., "Process for producing cocoa-derived material", issued 2012-06-13, assigned to Barry Callebaut AG.
(en) Janan Jay, « New ruby chocolate isn't special and probably tastes bad, says NZ expert », Stuff.co.nz, Fairfax New Zealand Ltd(en), (lire en ligne, consulté le ).
(en) Janan Jay, « New ruby chocolate isn't special and probably tastes bad, says NZ expert », Stuff.co.nz, Fairfax New Zealand Ltd(en), (lire en ligne, consulté le ).