Vietnam is one of the world's biggest coffee exporters, and much of the highlands surrounding Dalat in Central Vietnam is given over to plantations.The farm owes its success to an enterprising family, and a trove of heirloom Arabica cultivated from seeds brought to ?à L?t a century ago. The farm’s half-day workshops -- which follow traditional methods of processing from tree to cup -- are easily among the best coffee experiences in the country. Prepare to do a little work, drink a lot of coffee, and learn something entirely new.