Combine 1 ounce each scotch, Aperol and amontillado sherry in a shaker with ice and stir until cold, about 30 seconds. Strain into a rocks glass filled with a large ice cube. Garnish with a lemon wedge.
To make a proper cocktail, shake or stir with ice for 20 to 30 seconds — it’s longer than you think! This will dilute the drink just the right amount and make it extra cold.