Combine 50 ml Amaretto, 25 ml Fresh Lemon Juice, 15 ml Egg Whites, 2 dash Orange Bitters and ice in your cocktail shaker.
Shake until the cocktail shaker becomes noticeably cold.
Strain the mixture back into the shaker and discard the ice.
Shake the ingredients without ice this time to incorporate air. Shake for 10-15 seconds.
Next fill your rocks glass with ice.
Strain the mixture using your hawthorn and fine strainer into the glass. This ensures a smooth silky texture.
Garnish with 1 Orange Peel and 1 Maraschino Cherry.
Ta-dah! That's all it takes to make a delicious Amaretto sour.