Wash the sword beans thoroughly.
Slice the sword beans thinly to about 0.5cm thickness.
Stir-fry the sliced sword beans over low heat for 10 minutes to remove moisture.
After stir-frying, let the beans cool and dry them in the shade for 2-3 days.
Put 10g of the dried sword beans and 500ml of water into a pot and bring to a boil.
Once boiling, simmer over medium-low heat for 10 minutes.
Strain the tea and pour it into a cup.