Nicoya, Costa Rica is a Blue Zone where residents follow wholesome habits that make it extra frequent for them to reside to a hundred years or older. Intimate dinners at Sokasi — the curvaceous bamboo pavilion perched above the speeding Ayung River at the Four Seasons in Sayan — are all about preserving the island’s time-intensive culinary heritage. Arrive early for a peek on the pig roasting over a coconut wooden hearth earlier than tucking into rich, forgotten recipes featuring flavors like wild ginger and klengis (an extract from hand-making coconut oil). With a name that means “tribe” in Bahasa…