1 oz Pisco
1⁄2 oz Aperol
2 oz Grapefruit juice
1 oz Seltzer water
1 twst Orange peel (as garnish)
Shake 1st 4 ingredients, strain, ice-filled highball, top with seltzer, stir gently, garnish with bitters and orange swath
Pompelmo is Italian for grapefruit. I like the way Pisco and St. Germain play on the bitter Aperol and grapefruit components.
Pisco, Aperol, Elderflower liqueur, Grapefruit bitters, Grapefruit juice, Seltzer water, Orange peel