Place the sugar cube in a chilled champagne flute and moisten with a few dashes of bitters. Add champagne. Garnish with the lemon twist.
Adapted from Straight Up Or On the Rocks by William Grimes (North Point Press, 2001).
"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.