Place honey and water into a small sauce pan, slightly covered with a lid. Turn heat to medium low. Stir occasionally until honey is dissolved and no longer super thick.
Add in sprig of rosemary. Allow to simmer for 6-8 minutes.
Remove from heat. Place liquid into an airtight container, discard rosemary. You will be left with about ½ cup of syrup.
Cocktail
In a small pitcher add the wine, lemon juice, honey simple syrup, and vodka. Stir and let sit for a few minutes. Or if you want, you can prepare this part in advance and let it sit in the fridge in an air-tight container.
Pour ice into 2 glasses, pour half of the wine mixture over the ice. Split in half and pour the ginger beer on top of that.*
Garnish with rosemary and enjoy!
Notes
*I got this split/layered look by pouring the ginger beer directly onto the ice. You will want to stir and mix together before drinking, however.