Ingredients:
- 2 oz vodka
- 1 oz Yellow Chartreuse
- 1/2 oz fresh lemon juice
- 1/2 oz rosemary simple syrup (made by boiling equal parts sugar and water with a few sprigs of fresh rosemary until the sugar dissolves, then straining out the rosemary)
- Fresh rosemary sprig, for garnish

Instructions:
1. Fill a cocktail shaker with ice.
2. Add the vodka, Yellow Chartreuse, lemon juice, and rosemary simple syrup to the shaker.
3. Shake vigorously for about 10-15 seconds.
4. Strain the cocktail into a chilled martini glass.
5. Garnish with a fresh sprig of rosemary.

This modern original cocktail is a unique blend of flavors, with the herbal notes of the Yellow Chartreuse and rosemary combining perfectly with the crisp, clean taste of the vodka. The lemon juice adds a touch of tartness to balance out the sweetness of the simple syrup, while the rosemary garnish adds a beautiful aromatic touch to the drink. Enjoy the Yellow Rosemary Martini as a sophisticated and refreshing aperitif or after-dinner cocktail.