https://en.wikipedia.org/wiki/Vanillin
https://en.wikipedia.org/wiki/Vanilla_planifolia
https://edis.ifas.ufl.edu/publication/HS1348
https://www.sciencedirect.com/science/article/pii/S0304423814000739
https://www.promisol.com/en/noticias/trials-in-vanilla-plantations-madagascar
https://agriospice.com/a-guide-to-8-different-vanilla-bean-varieties-and-their-flavor-profiles/
https://vanillaqueen.com/category/the-tropics/tropical-foods/vanilla/