Combine all ingredients in a mixing glass with ice. Stir for 15-20 seconds or until desired dilution and temperature are reached. Strain into a chilled cocktail glass.

Homemade Ingredient
Sunflower Seed Simple: 

Use a 2:1 ratio (by weight) of roasted/salted/shelled sunflower seeds, and sugar. 
In a jar, combine seeds and sugar. Slowly add just enough hot water to dissolve the sugar. Take a pot and double boil the jar on med-low until the sunflower seeds start to darken. Take off heat, strain and pass through a coffee filter while the liquid is still hot. Cool, bottle, and serve.