1/2 shot rosemary-chili simple syrup (add more to your taste if needed)
For the simple syrup
2/3 C. water
1/3 C. sugar
2 sprigs rosemary (remove from stem and roughly chop)
1/4 tsp. dried red pepper flakes (or try some fresh jalapeño if you like)
Instructions
Make simple syrup by combining simple syrup ingredients in small sauce pan and bring to boil. Continue to boil a couple minutes, then remove from heat and let cool. Strain and chill.
In cocktail shaker filled with ice combine vodka, grapefruit juice and simple syrup. Shake well and strain into chilled martini glass.
Garnish with sprig of rosemary or slice of grapefruit, if desired.