The ideal water temperature for matcha is 160-175°F (70-80°C), which is below boiling. Water that's too hot will scorch the delicate matcha powder, creating a bitter, astringent taste and destroying beneficial nutrients and amino acids.
To achieve the correct temperature:
If you don't have a thermometer, the water should be steaming but not bubbling. When you add the water to matcha, you should be able to comfortably hold the bowl. This temperature range extracts matcha's sweet, umami flavors while minimizing bitterness, resulting in a smooth, balanced tea with optimal health benefits.