From Grace (a former employee and current customer):

(all spice measurements are approximates, adjust to suit your taste or budget)

6-8 whole star anise
12 cardamom pods
12 whole cloves
2 cinnamon sticks
1/4-inch pieces of ginger root, thinly sliced
1 teaspoon whole peppercorns
2 bay leaves
7 cups water
2 tablespoons black tea leaves
6 tablespoons brown sugar

Boil the star anise, cardamom pods, cloves, cinnamon sticks, ginger root, peppercorns, bay leaves, and water for 5 minutes then allow to steep for 10 minutes.

Bring back to boil and, using an infuser or tea bags, add the tea leaves. Simmer for 5 minutes, remove the tea leaves, and add sugar. Simmer for 5 minutes.

Serve with your preference of cream, milk, or soy milk.