At the revamped Merchants restaurant in a 118-year-old Nashville building, suspender-clad mixologists serve old-school drinks like this one from the mid-19th century.
1 sugar cube
Lemon twist for garnish
Put sugar cube in a Champagne glass. Lightly sprinkle the sugar cube with Angostura bitters and pour in enough sparkling wine to fill the glass. Garnish with a lemon twist before serving.