In a medium pot, combine black tea bags, 4 cups of water, a splash of vanilla extract, star anise, whole cardamom, a cinnamon stick, a split vanilla bean, and a teaspoon of ground turmeric. Bring to a simmer for 5 minutes.

Reduce heat to low and simmer for another 3-5 minutes, stirring occasionally.

Carefully strain the mixture using a fine-mesh sieve or cheesecloth into a bowl or pitcher, discarding the spices.

In a separate bowl, whisk together 1/4 cup of sweetened condensed milk and 1/4 cup of evaporated milk until smooth.

Pour brewed tea over ice-filled glasses, filling about three-quarters full, then drizzle the milk mixture over the top.

Garnish with a sprig of mint leaves and serve immediately.