Step 1
In a small saucepan, place the blackberries, turbinado sugar, and water and cook at medium heat for about 10 minutes. Squish the blackberries while they are cooking and stir occasionally.
Step 2
Remove from heat and pass mixture through a strainer. Let the blackberry mixture cool at room temperature. Reserve.
Step 3
In a small pitcher, combine ginger beer, vodka, lime juice, and blackberry syrup. Stir to combine.
Step 4
Add ice to two copper mugs and add the cocktail mixture. Garnish with mint and fresh blackberries.