In a saucepan, combine sliced ginger (no need to peel it) and water. Bring the mixture to a boil over high heat. Reduce the heat to a gentle simmer. Simmer for five minutes, then pour tea through a fine sieve. Stir in 2 T honey and place in the fridge until chilled (approx 30 minutes).
When the ginger tea is cool, divide it between two ice-filled copper mugs. Add 1/2 oz lime juice and 3 oz tart cherry juice to each mug. Add bitters, if using.
Top with ginger kombucha or ginger beer.
Garnish with a lime wheel or a skewer of cherry halves, pits removed so they look like hearts.