• 1.5 oz Amaretto (e.g., Disaronno) • 0.75 oz fresh lemon juice • 0.25 oz 2:1 simple syrup (optional, for balance) • 1 egg white (optional, for texture) • Shake without ice (if using egg white), then shake with ice • Strain into a rocks glass over ice • Garnish: lemon wheel or cherry