In a half gallon mason jar or pitcher, combine the water, apple cider vinegar, sweetener, ginger, and lemon juice.
Stir or shake until the honey or syrup is fully dissolved.
Let it chill in the fridge for at least an hour to allow flavors to meld. (SEE TIPS)
Strain out the ginger if desired, or leave it in for a spicier kick.
Serve cold over ice with a lemon slice or sprig of mint.