1. Combine the vinegar, fish sauce, sugar, lime juice, garlic, and red pepper flakes in a small bowl and stir until the sugar dissolves.
"The happiest people in the world interact about 7 hours a day," says Dan Buettner, author of Thrive. "They don't just wake up in the morning and schedule 7 hours of interaction. A lot of it happens to revolve around food and the rituals that surround food." Buettner circled the globe in search of the world's happiest populations -- he shares four tips with The Splendid Table.