Add apple juice, water, lemon, cinnamon stick, fresh ginger, ground ginger, and salt + pepper to a small saucepan and heat over medium high heat. Bring to a simmer, then turn off heat and add rooibos tea bags. Steep for 10-12 minutes, still on the stove (heat turned off).
Sample and adjust flavor as needed, adding cayenne and/or bourbon at this time. If you find it needs more sweetness, add coconut sugar or maple syrup (optional).
Remove tea bags and divide between two (amount as original recipe is written // adjust if altering batch size) serving glasses, with additional slices of lemon. Serve hot.
Best when fresh, though leftovers will keep covered well in the refrigerator for 2-3 days. Reheat on the stovetop or in the microwave.
*Nutrition information is a rough estimate calculated without bourbon.