In that picture i drank sweeter malaysian coconuts. I had no other option to refresh during bike ride and found these on roadside
Hum, "free coconuts ... In which country i can buy", do you want to buy free coconuts ;-) ?
Anyway, difficult to tell where are the tastiest one, that would require tasting them all around at that time of the year. But at the latest (and first) Amazon Fruit Festival the young coconut where pretty good. It's still possible to register for the upcoming one.