Combine water and a cinnamon stick or sticks in a small saucepan. Cover and bring to a simmer over medium heat.
Once at a hearty simmer, reduce the heat to low and gently simmer, covered, for a maximum of 10 minutes.
Remove from the heat and let steep for another 5-10 minutes as the cinnamon flavor is released into the water as it cools. My preferred time is 5 minutes. Strain with a mesh strainer and enjoy warm or chilled in the refrigerator for up to 4 days.
Quick Brewing Method: Use two sticks per cup of tea, pour boiling water over the top, and let steep for 10 minutes. Let it cool slightly (this is when the flavor magic happens) before enjoying or adding milk or honey.