Place the green tea in a teapot and add one cup of boiling water. Swirl the water to rinse the leaves and warm the pot. Pour out the water, leaving the green tea leaves in the teapot. Add four cups of boiling water to the teapot and steep the tea for two minutes. Steep for an additional four minutes, or to taste, and serve.

===
Write a summary of the previous text in Vietnamese:
Rửa lá trà. Ủ trà. Thêm đường và bạc hà.