Even before brewing, preparing tea begins with a few simple steps that make all the difference. Preheating the teapot and cups is one of them. It's a discreet step, often overlooked, but one that directly influences the quality of the final product.
Heating the utensils first prevents thermal shock when pouring the water. A cold teapot will immediately lower the temperature of the infusion, sometimes significantly, especially for the small volumes of water used in Japanese tea. However, a temperature that is too low can prevent the leaves from fully releasing their aromas.
Preheating stabilizes the entire process. The water stays at the desired temperature longer, the infusion is more consistent and controlled. The tea gains in precision, with more defined flavors.
This step is especially important with certain materials, such as cast iron, which absorb a lot of heat. Without preheating, the temperature loss can be significant and disrupt the tea's balance. But even with a clay or porcelain teapot, taking this time prepares you for the tasting and contributes to a more mindful ritual.
It's not a constraint, but rather a simple way to provide the tea with the right conditions to fully express itself.