In a medium saucepan, combine the water, sliced ginger, crushed cardamom pods, cloves, black peppercorns, and cinnamon stick. Bring this mixture to a boil over medium-high heat.
Once boiling, reduce the heat to low, cover, and let the spices simmer for about 5-7 minutes. This allows the flavors to infuse beautifully into the water.
Add the milk and sugar to the saucepan. Stir well to dissolve the sugar. Increase the heat to medium and bring the mixture back to a gentle simmer – be careful not to let it boil over.
Once simmering, add the black tea leaves. Stir gently and let the chai brew for another 2-3 minutes, or until it reaches your desired strength and color. The color should deepen to a rich amber.
Carefully strain the masala chai through a fine-mesh sieve into mugs, catching all the spices and tea leaves. Discard the solids.
Serve immediately and enjoy the aromatic warmth!