There's a great podcast episode on the Gastropod that discusses this issue: Mango Mania: How the American Mango Lost its Flavor—and How it Might Just Get it Back (2018) https://gastropod.com/mango-mania-how-the-american-mango-los...

The Fairchild Tropical Botanic Garden in Miami, Florida (mentioned in the podcast episode) has been hosting a Mango Festival for nearly 30 years. https://fairchildgarden.org/events/mango-festival/ https://en.wikipedia.org/wiki/Fairchild_Tropical_Botanic_Gar...