The Pink Llama (White Rum with Rhubarb Simple Syrup, Grapefruit, and Rosemary)

(from http://theviewfromthegreatisland.blogspot.com: It's 5 O'Clock Somewhere Fridays) 

This is the drink that inspired Joef's homemade, fruit-based simple syrup craze (the originators call it a Spring Fling, but we've renamed it)! Once you start, the possibilities are endless! This one uses rhubarb for the simple syrup, and is then combined with grapefruit juice. This is maybe the best drink he's ever made - it's so refreshing, light, and, I might add, rather complex flavor-wise. Enjoy!

To make the simple syrup:
2 cups white sugar
2 cups water
2 large stalks rhubarb, chopped

Bring to a soft boil, and bLoil for about 10 minutes, stirring occasionally. Mash the rhubarb as it softens. Remove from heat and strain out the pulp, then return the liquid to a medium boil. Reduce the liquid for about 10 minutes, stirring to ensure it doesn't burn.

To make the drink:
2 oz fresh-squeezed pink grapefruit juice (1 grapefruit=about 5 oz)
1 sprig rosemary
2 oz rhubarb simple syrup

2 oz Cachaça (white rum works)

Ice

Remove the rosemary leaves from their stem and place in a cocktail shaker. Add just a splash of grapefruit juice, and muddle together. Add the remaining ingredients and shake. Pour over ice, and serve with a sprig of rosemary. Ahh!