Pomelo

Makes: 1 drink

1 1⁄2 ounces gin, optional 2 ounces pink grapefruit juice 1to2 dashes Angostura bitters 2 ounces Vichy Catalan water To a tall glass filled with ice, add gin if using, juice and bitters. Top with sparkling mineral water, such as Vichy. Garnish with grapefruit zest or a small wheel or wedge. Serve at once.