Combine the honey and plain water in a medium pan over medium heat. Let the honey dissolve completely, stirring frequently.
Remove from heat and let cool before pouring into a pitcher. (About 10-15 min.)
Add lemon juice, herbs, ginger and lemon slices. Add in the vodka and gently stir if using. Place in the refrigerator to let chill before serving.
Right before serving, add in the sparkling water. Gently stir. Pour into glasses with ice and enjoy!