Add water to a saucepan and bring to a boil
Add black tea (or chai tea leaves) to the boiling water
Simmer for 2–5 minutes
Add ginger (fresh or ground) and simmer 1–2 minutes
Add spices (optional): cinnamon, cardamom, cloves, and/or black pepper
Add sugar to taste and stir until dissolved
Pour in milk (or your preferred milk) and bring to a gentle simmer
Simmer 1–3 minutes, stirring occasionally
Strain into cups
Serve hot