1 ounce Madre Mezcal
3/4 ounce Aperol
1/2 ounce freshly squeezed lemon juice
2 to 3 dashes of either Angostura bitters
3 ounces club soda
Lemon peel, for garnish
Fill cocktail shaker with ice. Add mezcal, Aperol, lemon juice, and bitters. Shake until well chilled, about 15 seconds. Fill a rocks glass with fresh ice. Add club soda to glass and strain cocktail on top. Garnish with lemon peel.