This vintage cocktail is a perfect blend of sweet and sour flavors. The limoncello adds a zesty lemon twist to the drink, while the other ingredients balance it out with sweetness and bitterness. Here's how to make it:

Ingredients:

- 2 oz limoncello
- 1 oz bourbon whiskey
- 1 oz fresh lemon juice
- 1/2 oz simple syrup
- 1 egg white

Instructions:

1. In a cocktail shaker, combine limoncello, bourbon whiskey, fresh lemon juice, simple syrup, and egg white.

2. Shake vigorously for 10-15 seconds to combine all ingredients.

3. Add ice to the shaker and shake again for 5-10 seconds to chill the drink.

4. Strain the drink into a chilled glass.

5. Garnish with a lemon twist or a sprig of mint.

Enjoy this vintage cocktail with a modern twist!