OK, I give you the "Blue State Rum Shrub."
First, you'll need to make the Shrub, which is a colonial drink base that uses vinegar as a preserving agent. You'll need:
•1 c water
•1 c sugar
•1 pint blackberries
•1 pint blueberries
•2 c white wine vinegar
- Whisk the water and sugar together to a boil, then reduce heat and add fruit, stirring for 10 minutes. Add the vinegar and boil for two minutes, then strain, cool and bottle the shrub mix.
Once you've got this lovely liquid, you can just mix it with the remaining ingredients...
•2 to 2 1/2 oz rum (I'd use Appleton's or Bacardi 8)
•1 oz shrub mix
•4 oz ginger beer (or Vernor's Ginger Ale, something with backbone)
Build with ice in a fun mug, stir and enjoy.